电路是差分放大电路
电源是3.3V,单电源供电。
电压检测
电流检测
输入浮空,输出浮空,测输出电压,大部分是0.22-0.18mV,但是也有一些是输出1.5mV,14mV,20.3mV。请问这是什么原因导致的?
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