Hello Michael thanks for your feedback. In my Open drain Ibis model there is no extra delay portion, because I have inserted as falling and rising waveform tables the result of transistor level simulation, that I am considering for comparison. I obtain this delay both Eldo and Hspice simulation. Best regards Roberto Michael Schaeder wrote: >Hello Roberto, > >I guess there is an extra delay portion in the >[Rising/Falling Waveform]s of your IBIS model. > >Regards, Mic. > >Monday, September 11, 2006, 2:17:18 PM, you wrote: > > > >>Hello everybody >> >> I 'd like to have some information about a strange behaviour of Open >>drain buffer >> Ibis model. I have noticed a mismatch between Transistor level and >>Ibis model >> voltage output during a transient analysis. In fact in presence of the >>same input voltage >> wave and the same value of load resistance (for example 70 ohm), >> we can observe a delay between TL output and Ibis output. This delay >>is the same >> if we change the value of load resistance. What is the cause of this >>strange behaviour? >> >> Thanks and best regards >> >> Roberto Izzi >> >> >-- >Dipl. Ing. Michael Schaeder Tel: +49 5251-150-670 >Zuken - EMC Technology Center Fax: +49 5251-150-700 >Vattmannstrasse 3 E-mail: Michael.Schaeder@pad.zuken.de >D-33100 Paderborn Web: www.zuken.com >Germany PGP Key: http://mail.pad.zuken.de/~mic/msc.asc > >-------------------------------------------------------------------- >|For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org >|with 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 e-mail a request to ibis-request@eda-stds.org. >| >|IBIS reflector archives exist under: >| >| http://www.eda-stds.org/pub/ibis/email_archive/ Recent >| http://www.eda-stds.org/pub/ibis/users_archive/ Recent >| http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993 > > -------------------------------------------------------------------- |For help or to subscribe/unsubscribe, e-mail majordomo@eda-stds.org |with 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 e-mail a request to ibis-request@eda-stds.org. | |IBIS reflector archives exist under: | | http://www.eda-stds.org/pub/ibis/email_archive/ Recent | http://www.eda-stds.org/pub/ibis/users_archive/ Recent | http://www.eda-stds.org/pub/ibis/email/ E-mail since 1993Received on Mon Sep 11 07:49:35 2006
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