Analog Devices Precision Operational Amplifier: Why is there a region where the input offset voltage varies significantly with common mode voltage variations in a rail-to-rail input operational amplifier like the ADA4500?

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Analog Devices Precision Op Amp: Why does a rail-to-rail input op amp like the ADA4500 have a region where the input offset voltage varies significantly with common-mode voltage variation?

Amplifier

The operational amplifier of this method is composed of two input stages. It is easy for the differential pair to become unbalanced at the point where the two input stages switch, resulting in an offset.

(Published in October 2022)

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