菜鸟,要做T型热电偶测温 -40~50℃;想ina333放大后单端输入ads1118,请问是否可行,跟差分输入相比能有那些不同,最后请教ads1118外围电路要怎样,手册上好像只有差分输入的电路,谢谢
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Hi
建议你参照TI的案例来做,见文档:http://www.ti.com.cn/cn/lit/an/sbaa189/sbaa189.pdf 或者方案:http://www.ti.com.cn/tool/cn/tipd109
ADS1118本身带PGA功能,不需要额外增加运放。