Subject: RE: [IBIS-Users] Using Differential IBIS Buffers in HSPICE
From: Mirmak, Michael (michael.mirmak@intel.com)
Date: Thu Apr 04 2002 - 10:43:03 PST
Tim,
There are known differences in how recent versions of HSPICE (2001.2 vs.
2001.4) treat differential IBIS models. Try consulting the Avant! website
or your local rep. for the latest usage recommendations on 2001.4. We've
had success by adding the following line to our B-element calls:
+hsp_ver=2001.2
This will force HSPICE to use the 2001.2 IBIS simulation engine. Try it and
see if your results meet expectations.
Good luck!
- Michael Mirmak, Intel Corp.
-----Original Message-----
From: Timothy Coyle [mailto:Timothy.Coyle@nsc.com]
Sent: Tuesday, April 02, 2002 10:09 AM
To: ibis-users@server.eda.org
Subject: [IBIS-Users] Using Differential IBIS Buffers in HSPICE
Hi,
I am trying to use differential output IBIS buffers in HSPICE. I set up
independent voltage sources on each of the inverting and non-inverting
output buffer.
I put 100 ohms across the outputs since it is LVDS. I'm getting some
strange results. Both buffers have non-inverting polarity and the voltage
swing is way off
for LVDS. Any help would be appreciated.
Thanks in advance,
Tim
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