Stats

  • Locked Locked
  • Replies 1
  • Subscribers 128
  • Views 16842
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

How can perform AC analysis for switch capacitor circuit filter

VictorArzate

Im working on a Low pass filter switched capacitor filter and Im using Cadence Virtuoso. I wolud like to know if it its possible to perform an AC Analysis 

  • Andrew Beckett

    You would need to use pss and pac. You cannot use standard ac on a switch cap circuit because it doesn't have a time invariant steady state (operating point). You would normally simulate a period of the clock using pss, and then do a small signal analysis using pac around that time-varying operating point.

    This is discussed in this paper: https://designers-guide.org/analysis/sc-filters.pdf

    Andrew

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.