[SI-LIST] What frequency are IBIS models good to?
- From: Eric Goodill <ericg@xxxxxxxxxxx>
- To: si-list <si-list@xxxxxxxxxxxxx>
- Date: Tue, 14 Sep 2004 11:54:42 -0700
Howdy,
We were having a discussion around work the other day about the maximum
frequency any given SPICE or IBIS model is good to. For SPICE circuit
models, it seemed pretty clear that the frequency accuracy of the model
depends on how good a job the model builder did at including parasitics
and so forth that come into play as the frequency increases.
Our understanding of IBIS models is not great, but we understand them to
be essentially I-V curves. One fellow asserted that this info is
gathered essentially at DC and thus could not represent the
high-frequency (> 500 MHz) behavior of a driver.
Comments?
-Eric
--
Eric Goodill Redback Networks
ericg@xxxxxxxxxxx 300 Holger Way
voice: (408) 750-5319 San Jose, CA 95134-1362
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