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Question on Cadence Capacitor Output Templates

heartsoar

What is the meaning of cbdbi, cbsbi, bddbi, cgdbi, cggbi, cgsbi and cssbi? The cadence manual doesn't provide any information about them. I need an accurate capacitor model for simulation, but was confused with them. Can anybody help me explain the meanings of them? Thanks!

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Parents

  •  These are the DC operating point parameters for
    the intrinsic capacitances of the Bsim3v3 MOS model
    (Spectre implementation).

    Do a 'spectre -h bsim3v3' from the command line:

    71      cddbi (F)         Intrinsic drain capacitance.
    72      cssbi (F)         Intrinsic source capacitance.
    73      cggbi (F)         Intrinsic gate capacitance.
    74      cgsbi (F)         Intrinsic gate-to-source capacitance.
    75      cgdbi (F)         Intrinsic gate-to-drain capacitance.
    76      cbdbi (F)         Intrinsic bulk-to-drain capacitance.
    77      cbsbi (F)         Intrinsic bulk-to-source capacitance.

    Or have a look at the
    'Virtuoso Simulator Circuit Components and Device Models Manual,
    BSIM3v3 Level-11 Model (bsim3v3)'.

    The are well documented.

    Bernd

Reply

  •  These are the DC operating point parameters for
    the intrinsic capacitances of the Bsim3v3 MOS model
    (Spectre implementation).

    Do a 'spectre -h bsim3v3' from the command line:

    71      cddbi (F)         Intrinsic drain capacitance.
    72      cssbi (F)         Intrinsic source capacitance.
    73      cggbi (F)         Intrinsic gate capacitance.
    74      cgsbi (F)         Intrinsic gate-to-source capacitance.
    75      cgdbi (F)         Intrinsic gate-to-drain capacitance.
    76      cbdbi (F)         Intrinsic bulk-to-drain capacitance.
    77      cbsbi (F)         Intrinsic bulk-to-source capacitance.

    Or have a look at the
    'Virtuoso Simulator Circuit Components and Device Models Manual,
    BSIM3v3 Level-11 Model (bsim3v3)'.

    The are well documented.

    Bernd

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