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INA188: DC CMRR for INA188

Di Wang
Expert 1740 points
Part Number: INA188

Hi,

I'm measuring a 10uA DC load with INA188. INA188 is powered by +-15V. I think Figure 16 specifies the AC CMRR. As the common voltage of INA188 is kept as 12Vdc, does it mean the error brought by AC CMRR could be ignored? I didn't find DC CMRR value in datasheet. Is the error brought by DC CMRR equal to (12Vdc/DC CMRR) as an additional offset(Vos) error?

Besides offset voltage, does the auto-zeroing techniques also eliminate the CMRR error?

Thanks.