Subject: [IBIS] IBIS issue at high frequencies
From: Nirav Patel (nirav@agere.com)
Date: Wed Aug 28 2002 - 22:04:33 PDT
IBIS gurus,
We are using Avanti HSPICE to correlate the IBIS
model performance to spice. We notice that the model
starts misbehaving abruptly as we increase the toggle
rate.
Our observation has been that the onset of this
misbehavior is a function of the delay through the
buffer. Buffers that have long propagation delays
tend to misbehave at lower toggle rates.
Does anybody have a clue on what may be the cause
of this issue? Any help will be very much appreciated.
Thanks in advance.
--Nirav
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