Hi, with single supply 3,3V, as voltage follower, I wonder:
(A) Is it guaranteed to be latch-up free up to some current? At least 10mA would be nice. Note: It can have this input current both when supplied with +3,3V and when supply is 0V in out design.
(B) Is it prone to "phase reversal"? We would like to be able to apply up to 13V via 50kohms to the non-inverting input, it is ok then if the output is locked to any rail, and it would also be ok if any input voltage between 3,3V and 13V could only cause the output to be locked to either rail, but it is not ok if phase reversal causes the output to be in between 0 and +3,3V.
(C) There are only typical figures on bias and offset current in the datasheet. Is it ok to assume a factor 2 for worst case at room temp and another factor 2 for temp drift, i e IBIAS < 60nA and IOFF < 32nA at 85degC? (Actually even a bit more than this would be ok, up to IBIAS < 80nA and IOFF < 200nA at least, but a factor 4 to me seems about right for an OP amp).
PS We are a big customer but since design is done by a subcontractor and I am a consultant, I have no good way of support via a distributor, this forum seems to be the quickest way.