Subject: RE: [IBIS] IV curve question...
From: Silva, Benjamin P (benjamin.p.silva@intel.com)
Date: Fri Nov 01 2002 - 11:23:42 PST
The simulator should do that automagically.
Ben
> -----Original Message-----
> From: ruston, matt [mailto:ruston_matt@emc.com]
> Sent: Friday, November 01, 2002 11:33 AM
> To: 'Ingraham, Andrew'; ruston, matt
> Cc: ibis@eda.org
> Subject: RE: [IBIS] IV curve question...
>
>
> Andy:
>
> Hi. The non-monotonicity is attributable to the separation
> of the various
> clamp and pulldown curves. I added the clamp curves back in
> (in Excel) and
> the curves looked normal.
>
> Does anyone know of an easier way to combine these clamp
> currents back with
> the pullup and pulldown curves? Any freeware utilities?
>
> Regards,
>
> Matt
>
> -----Original Message-----
> From: Ingraham, Andrew [mailto:Andrew.Ingraham@hp.com]
> Sent: Thursday, October 31, 2002 2:14 PM
> To: ruston, matt
> Cc: ibis@eda.org
> Subject: RE: [IBIS] IV curve question...
>
>
> Matt,
>
> I didn't know that the supply voltage was only 1.8V. Since in
> your sketch the non-monotonic region begins around there, it
> is possible that the non-monotonicity is related to the
> separation of currents into pull-down and clamp I-V tables.
>
> The spikeyness almost sounds like a simulator bug, especially
> with the way you can affect the spike by changing Tstep.
>
> Regards,
> Andy
>
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