RE: [IBIS-Users] Sweep voltage listing query

Abrar,
 
The pullup and power clamp tables are Vcc relative, so
the origin of these IV tables are at the supply voltage.
When the supply voltage moves for min and max, the origin
of the IV tables moves together with it.  The end points
of the tables only determine the sweep range, which has
nothing to do with what the supply voltage variation is.
 
I hope this clarifies your question.
 
Arpad
---------------------------------------------------------

________________________________

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf Of Abrar Ahmed
Sent: Tuesday, April 11, 2006 3:08 AM
To: ibis-users@eda.org
Subject: [IBIS-Users] Sweep voltage listing query


Dear Experts,
 
I request help in the following IBIS query:

In all IBIS files I have observed that for V-I characteristics, voltage sweep listing is only of the "typical case", eg : if the typ=3.3V, min=3V, max=3.6V

then the listing starts from -3.3V and goes till 6.6 V. For min and max conditions we change only the supply/clamp voltage and temperature, but not the sweep range,
which is always the "typical case" values. Is my understanding correct ?
 
Or if there is a change in all these values together, why is it not listed in the IBIS file separately.
 
 
Thanking you'll in advance,
Abrar
 

________________________________

New Yahoo! Messenger with Voice. Call regular phones from your PC <http://us.rd.yahoo.com/mail_us/taglines/postman5/*http://us.rd.yahoo.com/evt=39666/*http://beta.messenger.yahoo.com>  and save big.

|------------------------------------------------------------------
|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 1993