INA210在放大的时候,当REF电压为0的时候,实际输出会比取样电阻上的压降*200倍的结果低呢?
比如取样电阻50毫欧,经测试发现 假设电流是50ua,那么理论输出是0.05*0.05*200=0.5mv,但是实际上会低于他自身飘移+0.5v。如果在ref加上一个参考电压,在输出端就能体现出来这个+0.5mv
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