Other Parts Discussed in Thread: OPA2365, LMV321, TLV6001-Q1
I'm used LMV321-N-Q1 for PFC input voltage feedback.
OPA supply voltage is 3.3V.
When opa input is 110v, the output voltage be clamped arond 2.06v.
(CH1: OPA input CH2 : OPA output CH3:OPA supply voltage)
But if OPA supply voltage increase to 3.5v, the output voltage match the OPA setted gain.
I also tried to change OPA to OPA2365, the opa output is correct and don't need to change supply voltage to 3.5v or other.
Does the OPA's output capability is affected by supply voltage?
My english is not good, sorry.