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最近在做一个项目需要一个电流采样功能，由于之前LM2904的成本比较低，所以选用的LM2902，但采集的数据有一些问题，所以想请教一下各位，是电路设计有问题还是LM2904这颗料不太适合做电流采样？具体电路图如下，谢谢！
