Re: [IBIS] Open drain strange behaviour

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