> I think he is saying that the oscillations happen > because of the feedback in the buffer is trying to > settle to a steady state condition. > > If so, legacy IBIS can not model your buffer, since > there are no provisions for describing feedback. Yes. Although it depends on the feedback. Linear negative feedback, such as used on op-amps to reduce output impedance, should work OK, I think. It's probably also possible that some forms of feedback to reduce variations in drive strength (for example), ought to be somewhat compatible with conventional IBIS. But things like positive feedback to give hysteresis, don't play well in IBIS. Regards, 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 Jan 4 09:30:57 2006
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