From: Kim Helliwell (email@example.com)
Date: Fri May 12 2000 - 10:19:50 PDT
This has been bothering me for a while. Many vendors who supply
IBIS models on their web pages only provide a few from any
given family. What I'd like to know is: is it appropriate
to use buffer models from existing models in the family to
create new signal models for the same family? I cannot see
anything wrong with this as an approximation, but at least
one vendor has stated to me that it's not a good idea for their
models, at any rate.
If it's not appropriate, are there good reasons why not? Why
would doing this be worse than using the (usually execrable)
default models in my SI tool, for example?
Does anyone else follow this sort of procedure? Do you
take a flying guess at pin parasitics or leave them blank
or copy them from the existing models also?
-- Kim Helliwell Senior CAE Engineer Acuson Corporation Phone: 650 694 5030 FAX: 650 943 7260
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