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DRV8301的问题



在DRV8301-C2驱动板中,关于采样电阻有点疑问:

板子中采用5W 0.002欧姆的采样电阻,那么当有1A电流变化时,采样电阻电压变化才0.002V,

因为12位ADC模块的采样分辨率在3.3V下每一BIT能表示的电压为1mV(4095/3.3/100 )。

那么1A电流的变化,会引起ADC采样结果寄存器2-bit的变化,

如果存在温漂或干扰的情况下,这不是会出现很多错误????