RE: [SI-LIST] : Ibis models

Syed Huq ([email protected])
Sat, 25 Sep 1999 18:51:58 -0700 (PDT)

There are also simulators out there that will simply crash if the I-V
data in the IBIS model are non-monotonic. In that case the user needs
to go into the IBIS model and 'manually' tweak data points to make the
simulator read the file..

I am sure users are aware of this.

Cisco Systems, Inc

> The IBIS format does not require monotonicity for the I-V tables.
> However, the XTK simulator demands that the I-V curves of the Quad
> models to be monotonic. When translating an IBIS model having
> non-monotonic I-V data, IBIS2XTK shifts the currents between the LOW/
> HIGH state curves and SHUNT/ SHUNTP curves (or deletes some points if
> necessary) towards generating monotonic curves.

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