RE: [IBIS-Users] IBIS-SPICE correlation

Does the IBIS model have VT tables or ramps only? Is the dead time in the
VT curves equal for both the rising and falling edge?

 
Tom Dagostino
Teraspeed Consulting Group LLC
Device Modeling Division
13610 SW Harness Lane
Beaverton, OR 97008
503-430-1065
tom@teraspeed.com <mailto:tom@teraspeed.com>
 
 
Teraspeed Consulting Group LLC
2926 SE Yamhill St.
Portland, OR 97214
http://www.teraspeed.com
 

-----Original Message-----
From: owner-ibis-users@server.eda.org
[mailto:owner-ibis-users@server.eda.org]On Behalf Of Paglia, Frank M
Sent: Monday, March 15, 2004 4:15 PM
To: Mohan, Prabhu; Ibis-Users (E-mail)
Subject: RE: [IBIS-Users] IBIS-SPICE correlation

Hi Prabhu,
When you ran the spice simulations for the VT curves what was the
simulation time? How does this compare to the switching frequency of
your correlation?
If VT data goes out past 1/2 the switching period I have seen
correlation waveforms similar to the ones you sent.
Best regards,
Frank

-----Original Message-----
From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On
Behalf Of Mohan, Prabhu
Sent: Monday, March 15, 2004 3:48 PM
To: Ibis-Users (E-mail)
Subject: [IBIS-Users] IBIS-SPICE correlation

Hi
I am trying to correlate IBIS vs. Spice. The simulation seems to be off
on
the rising edge. IBIS seems to start switching a little bit earlier than
Spice on the rising edge (refer the attachment, red-IBIS, yellow-SPICE).
I'm
not sure what is causing it. Does anyone have any suggestion as to where
the
error might be coming from?
Thanks
Prabhu

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