With such low offset and offset drift, is the ADA4807 a zero drift or chopped
input stage amplifier?
No, the ADA4807 is not chopped, not zero drift, and not auto-zeroed. It is a
traditional input and output rail to rail amplifier with very low offset
voltage and offset drift. Maximum drift specs, such as offset voltage drift,
input bias current drift, and input offset current drift are listed to aid in
system level error budget analysis.