[SI-LIST] Re: IBIS Model error
- From: "Tom Dagostino" <tom@xxxxxxxxxxxxx>
- To: <sureshk@xxxxxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Mon, 17 Nov 2003 08:41:55 -0800
This model was not constructed correctly and needs to be fixed by the maker.
Tom Dagostino
Teraspeed Consulting Group LLC Teraspeed Consulting Group LLC
2926 SE Yamhill St. Device Modeling Division
Portland, OR 97214 13610 SW Harness Lane
Beaverton, OR 97008
http://www.teraspeed.com 503-430-1065
tom@xxxxxxxxxxxxx
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx
[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of Suresh.K
Sent: Monday, November 17, 2003 1:37 AM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] IBIS Model error
Hi Gurus,
Warm Wishes to all ......
I'm a beginner for SI Analysis and I need some clarification
about the Error of IBIS Model(71V2546-SRAM),which I'm getting when I
Import it into the Zuken's Hotstage tool Constraint Manager-Simulation
Library.
Actully I'm using the model ,which I downloaded from IDT website.
Please look into the error message below and give your precious
suggestions,
ERROR- Model IOPAD2546Z: The [Rising Waveform]
with [R_fixture]=50 Ohms and [V_fixture]=1.5V
has TYP column DC endpoints of 0.50V and 2.21v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.13V and 2.69V),
a difference of 288.80% and 84.70%, respectively.
ERROR- Model IOPAD2546Z: The [Falling Waveform]
with [R_fixture]=50 Ohms and [V_fixture]=1.5V
has TYP column DC endpoints of 0.50V and 2.21v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.13V and 2.69V),
a difference of 288.98% and 84.70%, respectively.
WARNING- Model 'IOPAD2546Z': TYP VI curves cannot drive through
Vmeas=1.25V
given load Rref=50 Ohms to Vref=1.5V
ERROR- Model IOPAD2546Z: The [Rising Waveform]
with [R_fixture]=50 Ohms and [V_fixture_min]=1.5V
has MIN column DC endpoints of 0.53V and 2.11v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.04V and 2.54V),
a difference of 304.74% and 86.47%, respectively.
ERROR- Model IOPAD2546Z: The [Falling Waveform]
with [R_fixture]=50 Ohms and [V_fixture_min]=1.5V
has MIN column DC endpoints of 0.53V and 2.11v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.04V and 2.54V),
a difference of 304.74% and 86.47%, respectively.
WARNING- Model 'IOPAD2546Z': MIN VI curves cannot drive through
Vmeas=1.25V
given load Rref=50 Ohms to Vref=1.5V
ERROR- Model IOPAD2546Z: The [Rising Waveform]
with [R_fixture]=50 Ohms and [V_fixture_max]=1.5V
has MAX column DC endpoints of 0.48V and 2.32v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.22V and 2.83V),
a difference of 283.59% and 82.91%, respectively.
ERROR- Model IOPAD2546Z: The [Falling Waveform]
with [R_fixture]=50 Ohms and [V_fixture_max]=1.5V
has MAX column DC endpoints of 0.48V and 2.32v, but
an equivalent load applied to the model's I-V tables yields
different voltages ( 2.22V and 2.83V),
a difference of 283.59% and 82.74%, respectively.
WARNING- Model 'IOPAD2546Z': MAX VI curves cannot drive through
Vmeas=1.25V
given load Rref=50 Ohms to Vref=1.5V
Errors : 6
Warnings: 6
File Failed
Thanks & Regards,
Suresh.K,
Vth EDA Lab,
C-DOT,
Bangalore-52.
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