#### flabbergastt

##### Junior Member level 2

I've been simulating a 2-stage op-amp using MOSFETs. These MOSFET models come with (typical, fast, slow, up and down).

I've only done simulations using typical models and am not sure how the rest of the MOSFET variation works.

Do I simply replace all the typical values (the op-amp works well with typical models) with each variation and see the extreme corners?

I am not familiar with process variations at all but would like to know the best approach. I'm currently using LTSpice and would like to get the most out of it.

Any help is appreciated, thanks!