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检测直流电机电流，用INA193 接0.03欧电阻两侧，0.03欧一端是接地的。测试0.03欧电压为0时，INA193输出44mV电压，请问这是什么原因，有什么办法可以消除？
检查一下硬件把，193的输出offset不会有那么大，应精密万用表测量输出sense电阻两端的电压看一下是多少
