RE: [SI-LIST] : Assistance with Quad model..

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From: Vukic, Mladenko (mladenko.vukic@intel.com)
Date: Fri Nov 12 1999 - 16:23:53 PST


you should try to create a topspec. Something like this

TOPSPEC BLA
NODE CAP 1 TYPE CAP_PAR
SERIES RES 1 TYPE RES_VAL
ENDTOPSPEC

Mladenko Vukic
PMD-PPD
Intel Corp.

-----Original Message-----
From: Phares, Charles [mailto:charles.c.phares@intel.com]
Sent: Friday, November 12, 1999 3:34 PM
To: si-list@silab.eng.sun.com
Subject: [SI-LIST] : Assistance with Quad model..

quad users,

I am trying to create a model to use in quad to approximate the "on"
resistance and pin capacitance of essentially a cmos transmission gate.
ascii schematically it looks like:

        in -------------/\/\/\/\/\/\----------------out
                | r
                |
                 = = = c
                |
                |
                gnd

I was hoping that it would be as simple as putting the following
statements
in a model file:

MODEL R_1
PIN 1 TYPE RES_VAL TO PIN 2
PIN 1 TYPE CAP_PAR
END_MODEL

LOADSPEC RES_VAL
REFF: 10

LOADSPEC CAP_PAR
CEFF: 3.5

But, unfortunately, the TOP file only reads the series resistance
parameter
and leaves out the cap. I guess it just doesn't like the dual pin
definition. It doesn't give me an error though.

Can anyone think of a slick way to make this model, using TOPSPEC or
something like that?

Thanks,
Charles Phares

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