This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ISO124与AD620

如图

使用AD620和IOS124采集电流,输入电流范围+-50mA,采样电阻100欧,增益为2倍,+-15V供电。

现象为:输入50mA电流,AD620刚上电输出正常9.95V,工作约1分钟后幅值开始下降,稳定后为8.5V左右,

10mA,20mA现象类似,请教下什么原因?