Stats

  • Locked Locked
  • Replies 3
  • Subscribers 126
  • Views 12860
  • 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

Where can I find the meaning of each parameter of the DC operating point?

zuiying

I am learning cadence virtuosuo recently. I installed a tsmc0.18um process library. When performing simulations, it is often necessary to print dc operating points.

LIke this：（Q2 is a npn of tsmc0.18um process library ）

Where can I find the specific meaning of all these parameters? (I tried to use the help function that comes with cadence virtuoso to search. Some parameters can be found, but some don’t. For example, I didn’t find the explanation for ro in the figure above)

Thank you so much.

Parents

  • Without seeing the models, I'm guessing that the model uses the "bjt" device in Spectre. If you run (from the UNIX command line): spectre -h bjt

    then scroll to the Operating Point Parameters section, you'll find:

    17 ro (Ohm) Common-emitter output resistance.

    as well as the other parameters. Info can also be found in the Spectre Circuit Simulator Components and Device Models Reference manual, near the end of the chapter.

    Andrew

Reply

  • Without seeing the models, I'm guessing that the model uses the "bjt" device in Spectre. If you run (from the UNIX command line): spectre -h bjt

    then scroll to the Operating Point Parameters section, you'll find:

    17 ro (Ohm) Common-emitter output resistance.

    as well as the other parameters. Info can also be found in the Spectre Circuit Simulator Components and Device Models Reference manual, near the end of the chapter.

    Andrew

Children

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.