I'd like to have advice about the offset voltage on plural amps.
I made a test circuit and observed the offset voltage on each amp of ADP8602(Agrade), Dual Precision CMOS, Single-Supply, Rail-to-Rail amp.
But the outcome was different from what I expected before doing it.
Both of the offset voltage were below the max value on the electric specification of the datasheet.
But there is a big gap between channle 1 and 2 as below.
・Offset voltage of channel 1 is 5uV
・Offset voltage of channel 2 is 193uV
Is it common that pularl amps in a package has a gap on the offset voltage like that?