Let me explain the question in more detail..
Talking about .AC analysis and lets say you sweep the frequency response of a differential op amp. You can plot several outputs (traces) at the the same time.
But lets say I want to sweep the freq response of the desired differential input and the frequency response of the common mode rejection at the same time. Instead of one input and two outputs, I have 2 inputs and one output.
Seems there is no simple way to do it.
I know you can make a sub circuit and hook it up both ways and get both results together, or use .step.
Anybody know of a neat trick to do this more simply?
Mark