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最近要测电流，希望可以测量的最小电流为1uA，最大电流100mA以内，通过采样电阻采样电流，最大电压12V以内，最好是I2C或者SPI接口的，速度要求越快越好，不知道是否有这样的芯片可用？若没有的话不知道什么方案比较好？精度比较高？
