RE: IBIS model creation a few comments...

Hi Stephen, all

Oops.. Ross is correct.
my appologies...

best wishes..
Kellee

At 03:13 PM 1/5/00 -0500, Ross Pryor wrote:
>Yikes, that's not a good idea for pullup and power clamp curves. What you
suggest will make life much more difficult for the curves
>which have to be made vcc-relative.
>
>Sorry to be repetitive. The data are tabulated after the vcc-relative
calculation, vtable=vcc-vout. After the calculation, the data
>have the same range.
>
>For a pullup curve, the following table may help:
>
> (vout) (vtable)
> sweep vcc-relative
>corner vcc range range
>------ --- ----- -------------
>min 3.0 -3.6 > 6.3 6.6 > -3.3
>typ 3.3 -3.3 > 6.6 6.6 > -3.3
>max 3.6 -3.0 > 6.9 6.6 > -3.3
>
>Regards,
>Ross
>-----Original Message-----
>From: Kellee Crisafulli [mailto:kellee@hyperlynx.com]
>Sent: Wednesday, January 05, 2000 2:32 PM
>To: Stephen Nolan; ibis-users@eda.org
>Subject: Re: IBIS model creation a few comments...
>
>
>
>At 12:31 PM 1/5/00 -0600, Stephen Nolan wrote:
>>In the section entitled "Making Pullup and Power Clamp Sweeps Vcc
>Relative" it
>>states that you should make your three sweeps Vcc relative. Example:
>min=-3.6 to
>>6.3, typ=-3.3 to 6.6, and max=-3.0 to 6.9.
>>
>>In this case, there would be table data created for the min column from
>-3.6 to
>>-3.3 where no typ data exists. Also, there would be data in the max column
>from
>>6.6 to 6.9 where no typ data exists. In those ranges, the typ column would
>have
>>to include NAs. Is this legal?
>Yes; I believe it is legal.
>
>However I suggest you make life simple and sweep them all from -3.6 to 6.9.
>I don't see any reason not to and it eliminates the whole issue (KIS
>principle).
>
>best wishes..
>Kellee
>
>---------------------------------------------------------
>Have a great day....
>Kellee Crisafulli
>HyperLynx, a division of Pads Software Inc.
>SI,EMC,X-talk and IBIS tools for the Windows platform
>E-mail: <mailto:kellee@hyperlynx.com>
>web: <http://www.hyperlynx.com>
>---------------------------------------------------------
>
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Have a great day....
Kellee Crisafulli
HyperLynx, a division of Pads Software Inc.
SI,EMC,X-talk and IBIS tools for the Windows platform
E-mail: <mailto:kellee@hyperlynx.com>
web:   <http://www.hyperlynx.com>
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Received on Wed Jan 5 12:27:23 2000