Re: [IBIS-Users] General question on IBIS and SSO simulations

I just wanted to add that I am aware of the modifications and issues
raised during the BIRD95 discussions. As any enhancements based on that
BIRD are at this time unknown and in any case won't be implemented into
simulators until some time in the not-so-near future, my question was
framed with the present IBIS capabilities and limitations in mind.

-Ray

Ray Anderson wrote:

>
> After working on Power Distribution issues at the PCB level for quite
> a number of years I'm now tasked with upgrading our company's IBIS
> models with respect to package parasitic modeling. As an aid in coming
> up to speed on some of the issues involved I have a general question
> in regards to utilizing IBIS models to simulate SSO noise issues.
>
> I've reviewed a number of the presentations and papers on the IBIS
> website from past Summits and other sources and have come away with a
> mixed message regarding the usefulness of IBIS in modeling SSO. I am
> trying to determine if it will be useful to our customers if we
> provide full parasitic information for the power and ground nets in
> our parts. Can that RLC information effectively be utilized in IBIS
> simulations to produce useful results? From what I've read, some
> authors contend that IBIS models are adequate to model SSO problems
> if proper package parasitic data and on chip capacitance data is
> provided while it seems that some others tend to question whether it
> can be done today with the present state of IBIS.
>
> Any comments and/or advice on the topic will be most welcome.

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Received on Fri Jan 7 13:05:04 2005