Re: [SI-LIST] : Convert an IBIS model to SPICE Model.

D. C. Sessions (
Thu, 02 Apr 1998 07:53:05 -0700

John Lin - TAO wrote:
> SI experts,
> How do I construct a SPICE model from an IBIS model?

That depends on the SPICE simulator. The syntax for
piecewise-linear transconductance elements differs
from one to another. Time-domain behavior is even
more interesting; basically, you have to take the
four V/T curves and back them through the V/I curves
to get turnon and turnoff profiles for the pullup
and pulldown devices, then make up a subcircuit
that modulates the transconductances to get the
same result.

D. C. Sessions