Hi,
Have the below circuit with ADA4637, without or with input, have the below interesting issue.
----30M oscillation when C34 is 220pf, Oscillation disappear when C34 is 12pf. Why? Change R35 can't help.
--I select other FET OP, there is similar oscillation as ADA4637 when C34 220pf. I change OP into no FET OP, there is no oscillation even C34 220pf. Why?
Best Regards,
Kent