RE: [IBIS-Users] RE: [IBIS] IBIS for pad with ESD Clamps

From: Tom Dagostino <tom_at_.....>
Date: Wed May 21 2008 - 12:07:23 PDT
Lynne

 

The Terminator model is much better, you can have the powerclamp and
groundclamp tables contain the ESD characteristics and you don't need to
worry about the Vinh/Vinl issues.  Terminators include C_comp also.

 

Also, Input models do not have Pullup and Pulldown tables.  I'm sure you
meant powerclamp and groundclamp.

 

Tom Dagostino
Teraspeed(R) Labs
13610 SW Harness Lane
Beaverton, OR 97008
503-430-1065

503-430-1285 FAX
tom@teraspeed.com
www.teraspeed.com

Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
401-284-1827 

 

From: owner-ibis@server.eda.org [mailto:owner-ibis@server.eda.org] On Behalf
Of Lynne D. Green
Sent: Wednesday, May 21, 2008 11:14 AM
To: 'Muranyi, Arpad'; ibis@server.eda.org; ibis-users@server.eda.org
Subject: RE: [IBIS-Users] RE: [IBIS] IBIS for pad with ESD Clamps

 

Another option would be using the Input model type, with the ESD
characteristics in the [Pullup] and [Pulldown] tables.  Of course, one would
include the pad capacitance, rail voltages, etc using the usual keywords.
The Vinh and Vinl values could be set to Vcc/2 to keep the parser happy.

 

The Input model type works for this because IBIS models only the current at
the pad, and not the internal circuitry of the receiver.

 

Lynne

 

 

"IBIS training when you need it, where you need it."

Next public IBIS seminar is Oct 9-10 in Fremont, CA.

 

Dr. Lynne Green
Green Streak Programs
http://www.greenstreakprograms.com
425-788-0412
lgreen22@mindspring.com

 

  _____  

From: owner-ibis-users@eda.org [mailto:owner-ibis-users@eda.org] On Behalf
Of Muranyi, Arpad
Sent: Wednesday, May 21, 2008 10:44 AM
To: ibis@eda.org; ibis-users@eda.org
Subject: [IBIS-Users] RE: [IBIS] IBIS for pad with ESD Clamps

You could consider using the

"Terminator" model type.

 

Arpad

=============================

 

  _____  

From: owner-ibis@server.eda.org [mailto:owner-ibis@server.eda.org] On Behalf
Of Ajay Kapoor
Sent: Wednesday, May 21, 2008 12:48 AM
To: ibis@server.eda.org; ibis-users@server.eda.org
Subject: [IBIS] IBIS for pad with ESD Clamps

Dear Experts,

 

I have a question regarding IBIS models.

We have an IP that is just a short with only ESD diodes connected between
supply rails. 

There is no input or output section in this IP.

Would it be possible to generate IBIS models for such an IP ?

If yes how should it be done ?

 

Thanks

Ajay



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Received on Wed May 21 12:23:00 2008

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