Hi.
I am trying to simulate a simple
chopper stabilized op-amp in Cadence Virtuoso (
PSS + Pnoise analyses), and seeing the output noise spectrum. So, it is expected that the chopping and anti-chopping will translate the 1/f-noise spectrum (of the op-amp) to the chopping freq.
PROBLEM: although it seems that the flicker noise has got shifted to the chopper freq (1 kHz), but, some
Flicker-like noise seems to have got introduced at baseband I am not sure if this is some kind of circuit phenomenon; or simulator-settings issue (various permutations of which I have tried out, and also tried to follow whatever literature/tutorials available on internet)
Any suggestion/help in this regard is highly sought.
Thanks and Regards,
Jay