I want to measure the IP3 of a Sample and Hold (clocked) using Cadence Spectre. What is the best procedure for this ? QPSS or PSS ? I want to sweep over input voltage.
The circuit diagram is attached. Just a simple tgate switch with a hold cap clocked at 2GHz, followed by a buffer then another tgate switch and a hold cap.
Input is a 50Mhz sine wave at 5mV.
I was about to answer this, but I see Ken answered the identical question you asked on the Designer's Guide Forum.