Stats

  • Locked Locked
  • Replies 4
  • Subscribers 126
  • Views 17788
  • 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 to plot something vs Vov

Pyroblast

Hi guys,

I am exploring the gm/id methodology.

It happens that I managed to plot gm/id vs vgs and now I would like to plot the gm/id vs vov. I tried plotting by using the calculator but I didn't get a proper result.

Then I thought that I could plot the Vdsat vs Vgs and from here try to use some cadence feature to plot the gm/id vs Vdst.

I don;t know if Vdsat is the same as Vov. Can someone confirm? Is that the correct way to do it?

What can I do plot then gm/id vs Vdsat?

Regards.

Parents
  • Pyroblast

    Hi Andrew, thanks for the reply.

    So you're suggesting to use the Vgs and Vth, from the (giving this info now) operating points saved into a file? Basically then I will have to plot the Vgs vs Vgs and the Vth vs Vgs and then compute with the calculator Vgs - Vth? The testbench can be a simple diode connected mosfet with Vgs = Vds and sweep that parameter?

    I've been told that there a lot of discussions and opinions about the Vdsat vs Vov. I have read that the Vov in small channel devices is basically equal to Vdsat. But I've heard different opinions.

    Are you able to give me some enlightenment about this?

Reply
  • Pyroblast

    Hi Andrew, thanks for the reply.

    So you're suggesting to use the Vgs and Vth, from the (giving this info now) operating points saved into a file? Basically then I will have to plot the Vgs vs Vgs and the Vth vs Vgs and then compute with the calculator Vgs - Vth? The testbench can be a simple diode connected mosfet with Vgs = Vds and sweep that parameter?

    I've been told that there a lot of discussions and opinions about the Vdsat vs Vov. I have read that the Vov in small channel devices is basically equal to Vdsat. But I've heard different opinions.

    Are you able to give me some enlightenment about this?

Children
No Data

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.