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INA191: INA191A1 放大后输出电压纹波很大

Part Number: INA191

测量电流的相关电路如下:

问题:
原理图中标绿部分INA191A1输出电压纹波很大,如下图,我想咨询下可能是什么原因造成?INA191A1是否可以这样使用?