Stats

  • Locked Locked
  • Replies 2
  • Subscribers 125
  • Views 13972
  • 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

Transistors Operating Region check in Ocean Script

AtaV

Hi,

I am trying to optimize my design using cadence ocean script to print a results on text file and then I am using Matlab for post processing this results and do iterations. The first criteria I have is to check whether the operating region of Transistor is in saturation or not "if(Region==2)". For 1-dimensional sweep I used to do it by writing "save MP:all" in text file and adding the path in stimulusFile and using using getData("MP:region" ?result "dc") to get transistor operating region.This method works very well in 1-dimensional sweep, however, I tried to use the same way for 2-dimensional sweep and it was not helpful. Does anybody know a way of checking transistors operating region in multi-dimensional sweep?

Thanks,

Ata

  • Hi Ata,

    Why was it "not helpful"? You'd use the same mechanism to save the data, and the getData() function should still work if you've done further sweeps around the dc (it probably would help to know how you've performed the sweeps). The getData() would then return a family of waveforms (rather than just a single value (in the case of no sweep) or a waveform (in case of 1-dimensional sweep)). The ocnPrint function (for example) would print out all of those different family functions.

    So I think you'll need to describe in more detail precisely what you're doing (maybe with an example) so we can understand what you're doing wrong.

    By the way, nowadays you don't need to include a file to save operating point information - there's a menu Outputs->To be saved->Save Op Parameter (or something like that) in ADE. If that's not there, you're presumably using an old (unsupported) version of the IC tools.

    Regards,

    Andrew.

  • in reply to Andrew Beckett

    Dear AtaV,

    AtaV said:
    his method works very well in 1-dimensional sweep, however, I tried to use the same way for 2-dimensional sweep and it was not helpful. Does anybody know a way of checking transistors operating region in multi-dimensional sweep?

    As Andrew noted, the question is how you are doing your "multi-dimensional sweep". If you are using the ParamTool, the manner of accessing the data will be different than if you are using ADE-XL or Assembler. As Andrew also noted, the use of the getData() function is still correct in a "multi-dimensional step". However, I believe the syntax used to access the particular sweep member will be different depending on the manner in which you are performing your sweep.

    Shawn

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.