<p class="MsoNormal" style="margin-bottom:0cm;margin-bottom:.0001pt;text-align:
justify;text-justify:inter-ideograph;text-indent:24.0pt;mso-char-indent-count:
2.0;line-height:150%"><span lang="ZH-TW" style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext;
mso-fareast-language:ZH-TW">医学诊断</span><span style="font-size:12.0pt;
line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-ansi-language:EN-US">市场持续高速增长</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，</span><span lang="ZH-TW" style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-fareast-language:ZH-TW">自疫情以</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-ansi-language:EN-US">来</span><span style="font-size:12.0pt;
line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">，</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext;
mso-fareast-language:ZH-TW">这块市场更备受关注</span><span style="font-size:12.0pt;
line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext;
mso-fareast-language:ZH-TW">技术型分销商</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext;mso-fareast-language:ZH-TW">Excelpoint</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext;mso-fareast-language:ZH-TW">世健公司</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，</span><span lang="ZH-TW" style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-fareast-language:ZH-TW">深耕医学诊断产品多年</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，</span><span style="font-size:12.0pt;
line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-ansi-language:EN-US">本次我们</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext;mso-fareast-language:ZH-TW">通过世健公司邀请了来自专业医学诊断产品企业的工程师储</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext;mso-ansi-language:EN-US">工</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext;mso-fareast-language:ZH-TW">跟大家分享实战案例</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">。</span><span lang="ZH-TW" style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-fareast-language:ZH-TW">该公司是一家专业从事医学诊断产品研发、生产、销售及服务的国家高新技术企业</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，主要产业为体外诊断试剂、仪器及独立第三方医学诊断服务。产品线涵盖生化、发光、血球、尿液、质谱、分子诊断、血脂亚组分检测</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">VAP</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">和</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">POCT</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">等。而储工有着丰富的设计</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext;mso-ansi-language:EN-US">与实战</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">经验</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">. <o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">这个实战案例主要是设计一个分光测色仪的硬件系统，该系统主要由光源、光接收器、信号处理器等组成，基本功能框图如图</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">1</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。光源灯采用小功率单波长</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">LED</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">，对于</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LED</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">发光的稳定性主要因素是电流和环境温度。故硬件方案中需要设计恒流源电路和恒温控制电路。</span><span style="font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;text-indent:22.0pt;
mso-char-indent-count:2.0;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="91d50a6d-30e3-4019-953e-58fac47a9f8c" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124473-1.png&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124473-1.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124473-1.png"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;text-indent:22.0pt;
mso-char-indent-count:2.0;line-height:150%"><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">图</span><span style="font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">1</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">1</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">、恒流源电路方案设计</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:14.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">对于小功率的恒流源设计，最常用的就是运放</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">场管方案。电路如图</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">2</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">所示，该方案由分立元件组成，运放、三极管、电阻的电气参数一致性及温漂会极大的影响恒流源的精度，影响因素较多难以控制。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="b49af506-3f39-4cb5-a950-53d9637ebcef" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124475-2.jpg&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124475-2.jpg&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124475-2.jpg"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">2<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">ADI</span><span lang="ZH-TW" style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext;mso-fareast-language:ZH-TW">公司</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">旗下有一款产品（型号：</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">LT3092</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">）单芯片集成了多个元件，使器件一致性和温漂更容易控制，成为恒流源方案的理想选择器件。最大输出电流</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">200mA</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">满足小功率恒流源的需求；超宽的输入电压范围及低压差工作电压（</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">1.2V~40V</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">）使得电源电压设计更具兼容性；内部更有高精度微恒流源（</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">10uA</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">），结合精密电阻可组成高精度的参考电压源。内部原理图如图</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">3</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><span style="mso-spacerun:yes"> <img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="69d5cbba-4278-4b71-9452-482d0ba53daf" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124476-3.png&…; /></span><o:p></o:p></span></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124476-3.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124476-3.png"){kind=link}
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">若无需更改恒流源电流，则</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">R<sub>SET</sub></span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">选用固定高精度低温漂的电阻即可。若想实时调节电流，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">R<sub>SET</sub></span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">可选用数字电位器（如</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">ADI</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">公司产品</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">AD5610</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">），用</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">MCU</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">来控制。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LT3092</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">的</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">SET</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">引脚还可以直接连接</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">DAC</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">，用</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">直接控制更是一种方便简单又省成本的方案，如图</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">4</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">由于分光测色仪用到多个不同波长的</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LED</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">，可以让每个</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">LED</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">配上一个恒流源，当然更好的方案是只用一个恒流源然后用模拟开关切换通道，这样更省成本。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADI</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">公司有一款产品（型号</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">ADG452</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">）单芯片集成</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">4</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">通道模拟开关。较低的导通电阻（</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">4Ω</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">）；每通道</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">100mA</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">的工作电流；快速的开关频率（</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">t<sub>ON </sub>= 70ns</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">t<sub>OFF </sub>= 60ns</span><span style="font-size:12.0pt;
line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">）。电气性能完全满足设计需求，方案电路实现如图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">5</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="d6777d9f-98da-437f-a51e-e264897ab9fc" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124477-4.jpg&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124477-4.jpg&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124477-4.jpg"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">5<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">2</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">、恒温控制电路方案设计</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:14.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">恒温控制电路由加热器</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">温度传感器</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">温度保护器</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">控制器构成，如图</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">6</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">。温度开关用于加热失控时的过温保护，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">接受来自温度传感器的反馈，利用</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">PID</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">算法去控制驱动器调节加热器的功率输出，达到恒温控制的目的。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="9ab24cf8-cc45-49ae-9fcc-f90ab990b4d3" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124478-5.png&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124478-5.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124478-5.png"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">图</span><span style="font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">6</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">加热器可以是恒压驱动，用场管作为开关，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">用</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">PWM</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">方式控制调节。但由于</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">PWM</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">方式控制频率较高且信号存在突变，会对电路系统造成较大的噪声干扰，进而影响用于精密测量的模拟电路。另一种方案是采用恒流驱动加热器，借鉴上述</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LED</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">恒流源电路方案，选择输出电流更大的恒流源芯片（如</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">ADI</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">公司产品</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LT3085</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">），输出电流达</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">500mA</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">，其他参数、功能与</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">LT3092</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">类似，功能框图如图</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">7</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="32c9e04a-9956-4175-af62-b8fd1845778f" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124479-6.png&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124479-6.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124479-6.png"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">7<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">配上数字电位器，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">可以实时调节电流变化，以控制加热器的功率输出。并且恒流方式调节频率低、过程平缓不会引起电压信号的突变。部分电路原理图如图</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">8</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="9288d1f6-82ee-42a2-b3d9-d9b94d17d825" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124480-7.jpg&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124480-7.jpg&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124480-7.jpg"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">8<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">加热功率计算：</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">P = I<sup>2</sup>*R</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">（</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">I</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">为恒流源电流，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">R</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">为加热器电阻）</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:84.8pt;mso-para-margin-left:7.71gd;
text-indent:30.0pt;mso-char-indent-count:2.5;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">I = 10uA * R<sub>W</sub> / R<sub>53</sub></span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">（微恒流源电流</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">*</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">数字电位器</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">/</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">采样电阻）</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">温度传感器可以选择线性好、精度高的</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">PT100</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">。对于</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">PT100</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">的驱动电路，需要设计恒流源，信号放大电路，再加上模数转换器，模拟器件分立且数量较多，硬件成本较高，对于</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">PCB</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">面积受限的应用也不好布局，因此可以选择集成度高的器件如</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">ADI</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">公司产品（型号：</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">AD7124-4</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">），集成程控放大器（增益编程范围为</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">1~128</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">），可以直接连接小信号传感器而无需放大电路；内置激励电流源（设置范围</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">50 μA~1 mA</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">），正好方便给温度传感器供电；高达</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">19 kSPS</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">24 </span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">位高性能多通道</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">Σ-Δ</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">型模数转换器，足够以高分辨率采集温度数据。应用</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">AD7124-4</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">设计的</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">PT100</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">驱动电路原理图详见图</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">9</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">。</span></p>
<img alt="实战分享：分光测色仪硬件设计方案" data-align="center" data-entity-type="file" data-entity-uuid="1f9f6daf-3ba9-4519-a555-c7b7e81d83c9" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124482-8.png&…; />
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">9<o:p></o:p></span></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124482-8.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124482-8.png"){kind=link}
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">PT100</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">采用</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">4</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">线制，两线用于信号采集，两线用于激励源通电流，这样无论信号线多长，都可以消除线电阻对信号检测的影响。流经</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">RTD</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">的电流也会流过精密基准电阻，产生基准电压。此精密基准电阻上产生的电压与</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">RTD </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">上的电压成比例，因此，激励电流的波动会被消除。</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">3</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">、光电转换电路设计</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:14.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">光电转换电路一般采用光电二极管（</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">PD</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">）</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">运放</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"> + </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">模数转换器（</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">ADC</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">）方案（如图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">10</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">）。由</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">PD</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">采集反射光，由运放流压转换并放大信号，然后</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">ADC</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">转换为数字信号给</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。由于</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">PD</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">工作于光伏模式，因此负责流压转换的运放需要超低偏置电流；为了提高分辨率，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADC</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">需要尽量高的处理位数。</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="a756f7fd-38f0-47fe-a17d-1a3232766b74" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124483-9.png&…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124483-9.png&…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124483-9.png"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">10<o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">考虑使用多个高性能分立器件硬件成本过高，在性能达标的条件下可以尽量选择集成度高的器件。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADI</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">旗下有一款产品（型号：</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">ADPD2211</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">），自带</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">24</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">倍电流放大器使之拥有超高的灵敏度，省去了外置运放；极好的脉冲响应（典型带宽达</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">400KHz</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">）；超低电流噪声（</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">90fA/√Hz</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">）。其内部功能框图如图</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">5</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。在输出端加上采样电阻到地，即可实现流压转换，省去众多的外围电路。其功能框图如图</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">11</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">。</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><img alt="实战分享：分光测色仪硬件设计方案" data-entity-type="file" data-entity-uuid="91293287-c9b7-4b74-ad2c-98a01c1cd84f" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124485-10.png…; /></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124485-10.png…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124485-10.png"){kind=link}
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">11<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">4</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">、</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:14.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">MCU</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:14.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">选型</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:14.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman";color:windowtext">市面上</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">以内核区分主要是</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">51</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">内核和</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ARM</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">内核，还有部分是个某些厂家自研的内核。当选择同一内核的</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">MCU</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">时，各大厂家的产品却都大同小异，而</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADI</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">公司拥有高精度</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">ADC</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">与高性能</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">MCU</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">完美结合的产品（型号：</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADuCM361</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">）其内部资源框图如图</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">12</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">，结合如此高性能模拟部分的</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">在市面上</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext;
mso-ansi-language:EN-US">少有。</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext"><o:p></o:p></span></p>
<img alt="实战分享：分光测色仪硬件设计方案" data-align="center" data-entity-type="file" data-entity-uuid="4f60fb79-4959-4bbd-a6ca-ebc9aaceb97f" src="http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124486-11.png…; />
<p align="center" class="MsoNormal" style="text-align:center;line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">图</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">12<o:p></o:p></span></p>
![http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124486-11.png…](http://new.eetrend.com/files/2021-03/wen_zhang_/100062536-124486-11.png"){kind=link}
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">ADuCM361</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">内置</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">32 </span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">位</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ARM Cortex-M3® </span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">处理器，常见的外设如</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">UART</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">SPI</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">、</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">IIC</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">Timer</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">DMA</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">、</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">DAC</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">Watchdog</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">都有集成，非常方便使用；自带一个片内</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">32 kHz </span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">振荡器和一个内部</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">16 MHz</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">高频振荡器使硬件设计可以省去外部晶振电路；最令人刮目相看的是它集成了</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">4 kSPS</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">、</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">24 </span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">位高性能多通道</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">Σ-Δ</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">型模数转换器</span><span style="font-size:12.0pt;line-height:150%;
font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">(ADC)</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，可在全差分和单端模式下工作，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADC</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">模块集成硬件滤波器，可以选择配置高速滤波器来进行步进变化检测，也可选择低速滤波器用于精密测量；内置一个低噪声、低漂移带隙基准电压源，也可选择外部基准电压源；附带的可编程激励电流源，可以应用于许多电流驱动型的传感器。</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="text-indent:24.0pt;mso-char-indent-count:2.0;
line-height:150%"><span style="font-size:12.0pt;line-height:150%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;color:windowtext">ADuCM361</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">集成的模拟部分功能正好与</span><span style="font-size:
12.0pt;line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">AD7124-4</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">功能相似，方案本身就需要</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">MCU </span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">作为信号处理模块，若选择</span><span style="font-size:12.0pt;line-height:
150%;font-family:"Times New Roman","serif";mso-fareast-font-family:宋体;
color:windowtext">ADuCM361</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">，则可以省去</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">AD7124-4</span><span style="font-size:12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman";color:windowtext">，</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">ADuCM361</span><span style="font-size:12.0pt;line-height:
150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">拥有的多通道</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">ADC</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">模块完全可以满足光电数据采集、温度传感器驱动，</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext">DAC</span><span style="font-size:12.0pt;line-height:150%;
font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman";color:windowtext">控制光源恒流源并可以微调电流，</span><span style="font-size:12.0pt;line-height:150%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:windowtext">SPI</span><span style="font-size:
12.0pt;line-height:150%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman";
color:windowtext">控制数字电位器来动态调节加热器电流达到恒温目的。</span><span style="font-size:12.0pt;
line-height:150%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;color:windowtext"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:7.5pt"><b style="mso-bidi-font-weight:
normal"><span style="font-size:10.5pt;line-height:130%;font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman"">关于世健</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:10.5pt;line-height:130%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">——</span></b><b style="mso-bidi-font-weight:normal"><span style="font-size:10.5pt;line-height:130%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman"">亚太区领先的元器件授权代理商</span></b><b style="mso-bidi-font-weight:
normal"><span style="font-size:10.5pt;line-height:130%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体"><o:p></o:p></span></b></p>
<p class="MsoNormal" style="margin-bottom:0cm;margin-bottom:.0001pt;text-indent:
21.0pt;mso-char-indent-count:2.0;line-height:200%"><span style="font-size:10.5pt;
line-height:200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">世健是完整解决方案的供应商，为亚洲电子厂商包括原设备生产商</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">(OEM)</span><span style="font-size:10.5pt;
line-height:200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">、原设计生产商</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">(ODM)</span><span style="font-size:10.5pt;
line-height:200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">和电子制造服务提供商</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">(EMS)</span><span style="font-size:10.5pt;
line-height:200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">提供优质的元器件、工程设计及供应链管理服务。</span><br />
<span lang="EN-US" style="font-size:10.5pt;line-height:200%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;mso-ansi-language:EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-size:10.5pt;
line-height:200%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体"> </span><span style="font-size:10.5pt;line-height:200%;font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman";
mso-bidi-font-family:"Times New Roman"">世健与供应商及电子厂商紧密协作，为新的科技与趋势作出定位，并帮助客户把这些最先进的科技揉合于他们的产品当中。集团分别在新加坡、中国及越南设有研发中心，专业的研发团队不断创造新的解决方案，帮助客户提高成本效益并缩短产品上市时间。世健研发的完整解决方案及参考设计可应用于工业、无线通信及消费电子等领域。</span><br />
<span lang="EN-US" style="font-size:10.5pt;line-height:200%;font-family:
"Times New Roman","serif";mso-fareast-font-family:宋体;color:#2B2B2B;mso-ansi-language:
EN-US"><span style="mso-spacerun:yes"> </span></span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;color:#2B2B2B"> </span><span style="font-size:10.5pt;line-height:200%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman"">世健是新加坡的主板上市公司，总部设于新加坡，拥有约</span><span lang="EN-US" style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;mso-ansi-language:EN-US">6</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">50</span><span style="font-size:10.5pt;line-height:
200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman"">名员工，业务范围已扩展至亚太区</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">40</span><span style="font-size:10.5pt;line-height:
200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman"">多个城市和地区，遍及新加坡、马来西亚、泰国、越南、中国、印度、印度尼西亚、菲律宾及澳大利亚等十多个国家。世健集团在</span><span lang="EN-US" style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体;mso-ansi-language:EN-US">2020</span><span style="font-size:10.5pt;line-height:200%;font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:
"Times New Roman"">年的年营业额超过</span><span lang="EN-US" style="font-size:10.5pt;
line-height:200%;font-family:"Times New Roman","serif";mso-fareast-font-family:
宋体;mso-ansi-language:EN-US">11</span><span style="font-size:10.5pt;line-height:
200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman"">亿美元。</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">1993</span><span style="font-size:10.5pt;
line-height:200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman";mso-bidi-font-family:"Times New Roman"">年，世健在香港设立区域总部</span><span style="font-size:10.5pt;line-height:200%;font-family:"Times New Roman","serif";
mso-fareast-font-family:宋体">——</span><span style="font-size:10.5pt;line-height:
200%;font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman";mso-bidi-font-family:"Times New Roman"">世健系统（香港）有限公司，正式开始发展中国业务。目前，世健在中国拥有十多家分公司和办事处，遍及中国主要大中型城市。凭借专业的研发团队、顶尖的现场应用支持以及丰富的市场经验，世健在中国业内享有领先地位。</span><span style="font-family:"Times New Roman","serif";mso-fareast-font-family:宋体"><o:p></o:p></span></p>