---
+ Post New Thread
Results 1 to 6 of 6
  1. #1
    Newbie level 2
    Points: 743, Level: 5

    Join Date
    Oct 2008
    Posts
    2
    Helped
    0 / 0
    Points
    743
    Level
    5

    How to plot CV curve for a MOSCAP in Cadence?

    Hi, How to plot CV curve for an MOSCAP in cadence?
    In DC analysis I saw some "op" and "opt" option in Calculator. I chose the Cgg option to plot Vs Vgs. But its showing only one Value. I want to plot the complete CV Curve, how it can be possible??

    •   Alt23rd October 2008, 20:38

      advertising

        
       

  2. #2
    Member level 3
    Points: 1,133, Level: 7

    Join Date
    Aug 2008
    Posts
    56
    Helped
    5 / 5
    Points
    1,133
    Level
    7

    how to compare cv curves

    SPICE can, i am not sure about cadence, refer to the manual.

    Best regards.
    ELE



    •   Alt26th October 2008, 07:47

      advertising

        
       

  3. #3
    Newbie level 3
    Points: 1,175, Level: 7

    Join Date
    Jul 2006
    Posts
    4
    Helped
    0 / 0
    Points
    1,175
    Level
    7

    spice cv curve

    you can simulate in ADE, sweep the gate voltage as a parameter!



    •   Alt26th October 2008, 10:35

      advertising

        
       

  4. #4
    Newbie level 2
    Points: 743, Level: 5

    Join Date
    Oct 2008
    Posts
    2
    Helped
    0 / 0
    Points
    743
    Level
    5

    plot cv curve

    I did In CADENCE. I swept the gate voltage and shorted the Drain, Source and Bulk terminal to GND. I did the DC analysis. Now I want to plot the CV Curve. But I don't know how to do it??
    Please can anybody tell me the way how to do it in CADENCE???



  5. #5
    Member level 2
    Points: 1,089, Level: 7

    Join Date
    Mar 2008
    Posts
    46
    Helped
    3 / 3
    Points
    1,089
    Level
    7

    Re: plot cv curve

    Quote Originally Posted by mudassarmeer View Post
    I did In CADENCE. I swept the gate voltage and shorted the Drain, Source and Bulk terminal to GND. I did the DC analysis. Now I want to plot the CV Curve. But I don't know how to do it??
    Please can anybody tell me the way how to do it in CADENCE???
    Is it ok to do it in DC analysis? I think the capacitor's value depends on the frequency, right?



  6. #6
    jjx
    jjx is offline
    Junior Member level 3
    Points: 906, Level: 6

    Join Date
    Sep 2008
    Location
    Scania
    Posts
    27
    Helped
    12 / 12
    Points
    906
    Level
    6

    Re: How to plot CV curve for a MOSCAP in Cadence?

    This link is quite helpful:

    The Designer's Guide Community Forum - Plot the CV curve using the spectre

    So, set the frequency fixed and sweep the DC voltage instead (i.e., in the AC analysis choose Sweep Variable to be Design Variable instead, where you have your DC value as a parameter).

    I must, however, say that I haven't used it frequently, but it seemed to work pretty well for my test setup.



+ Post New Thread
Please login