SPICE AND SPECTRE

Discussion in 'Cadence' started by Ramnath, Dec 2, 2003.

  1. Ramnath

    Ramnath Guest

    Sir,
    I tried the simulation of PMOS for its current characteristics in
    SPICE,spectre using spice Netlist reader and also in cadence format.
    I compared the simulation results of all. Each simulator results
    doesn’t match with one another. Even the spectre results using
    Netlist reader and cadence format.

    Why these differences occur?

    How to tune the tool to produce desired results?

    How to find what parameter values of pmos devices are taken for
    calculation?


    Help.

    With regards,
    V G Ramnath

    Remove XXX and YYY to mail.
     
    Ramnath, Dec 2, 2003
    #1
  2. Ramnath

    snmishra Guest

    ramnathvg> Sir,
    ramnathvg> I tried the simulation of PMOS for its current
    ramnathvg> characteristics in
    ramnathvg> SPICE,spectre using spice Netlist reader and also in
    ramnathvg> cadence format.
    ramnathvg> I compared the simulation results of all. Each
    ramnathvg> simulator results
    ramnathvg> doesn’t match with one another. Even the spectre
    ramnathvg> results using Netlist reader and cadence format.

    ramnathvg> Why these differences occur?

    ramnathvg> How to tune the tool to produce desired results?

    ramnathvg> How to find what parameter values of pmos devices are
    ramnathvg> taken for
    ramnathvg> calculation?


    ramnathvg> Help.

    ramnathvg> With regards, V G Ramnath
    ramnathvg> Remove XXX and YYY to mail.

    Refer to Spectre Model Equations documentation in cdsdoc. For example
    chapter 2 discusses why spectre could differ from SPICE depending on how
    kp, uo, cox etc. are specified.

    If this does not explain the differences, please post some example
    netlists and models that reproduce the problem.

    Satya
     
    snmishra, Dec 2, 2003
    #2
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