RE: [IBIS] External Model use

Fabio,

Sorry for the delay in answering your questions.

You are basically asking two independent questions.

The purpose of [External Model] is to replace the guts

of [Model] without changing any of its connectivity.

[External Circuit] is a more general keyword, it can

be connected in more flexible ways.

Whether you can express an I-V or V-t curve with

equations is a different question. The *-AMS

languages available for the [External ***] keywords

certainly allow you to do that, but the question is

whether you can find an equation which will serve

the purpose accurately enough to model your device.

Thanks,

Arpad

=====================================================

From: owner-ibis@eda.org [mailto:owner-ibis@eda.org] On Behalf Of Fabio
BRINA
Sent: Tuesday, January 18, 2011 10:22 AM
To: ibis-users; 'IBIS'
Subject: [IBIS] External Model use

Hello ibis experts,

I'd like to understand something more about [External Model] and
[External Circuit]

keywords, there somewhere any ibis working examples whit that?

I don't know if this is a legitimize request...

I have read [External Model] keyword can be used to replace the usual
I-V and

V-t tables; it is possible to define a polynomial expression (polynomial
function)

to describe I-V and V-t curves? (using one of the supported Language)

Thank you (anyway) ,

Fabio

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