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DRV8874: 电流采样的问题咨询

Part Number: DRV8874
Other Parts Discussed in Thread: DRV8701

如题,使用的是DRV8874

电机的实际电流只有60mA,但是读取的电流是120mA,请问一下是什么原因导致的,同样的使用DRV8701读取到的电流就是正确的,AIPROPI (μA/A)=450