What would happen with a model of an IC with a very wide voltage range, say for Vcc from 1.0 V to 3.6 V or more? For such a part, it may be better to create separate IBIS models for the different intended ranges; such as, one model for 1.5 V nominal, another for 2.5 V, another for 3.3 V, etc. But if you had a single model that worked well for the entire range (though it is debatable if you could make an accurate IBIS model to do this), what should it use for its sweep range? Probably not a Vcc in the middle of the range. Are devices tending to have greater relative Vcc voltage ranges? Many 5 V parts were +/- 5% only. Today's lower voltage parts have wider relative Vcc ranges. Perhaps IBIS needs to pay closer attention. Just a thought.... Andy |------------------------------------------------------------------ |For help or to subscribe/unsubscribe, email majordomo@eda.org |with just the appropriate command message(s) in the body: | | help | subscribe ibis <optional e-mail address, if different> | subscribe ibis-users <optional e-mail address, if different> | unsubscribe ibis <optional e-mail address, if different> | unsubscribe ibis-users <optional e-mail address, if different> | |or email a written request to ibis-request@eda.org. | |IBIS reflector archives exist under: | | http://www.eda.org/pub/ibis/email_archive/ Recent | http://www.eda.org/pub/ibis/users_archive/ Recent | http://www.eda.org/pub/ibis/email/ E-mail since 1993Received on Wed Apr 19 05:22:07 2006
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