jdp721
Member level 2
Hi.
For the following inverting amplifier config using fully diff folded cascode opamp:
should the loop gain found using STB analysis (CMDM = -1) equal to [ (open-loop gain of opamp) * (beta) ] ?
- or is the loop gain not so easy to be calculated? - because, my simulation result is not matching with such calculation!
(here, I used beta = feedback factor = 1/11, and the open loop gain was found from open loop simulation)
A reply in this regard will be very helpful :roll:
For the following inverting amplifier config using fully diff folded cascode opamp:
should the loop gain found using STB analysis (CMDM = -1) equal to [ (open-loop gain of opamp) * (beta) ] ?
- or is the loop gain not so easy to be calculated? - because, my simulation result is not matching with such calculation!
(here, I used beta = feedback factor = 1/11, and the open loop gain was found from open loop simulation)
A reply in this regard will be very helpful :roll: