Re: IBIS model creation

Hello Nick:

  Take a look at your Vout data. -3.0 to 6.0 is the sweep range
for the 'max' (Vcc = 3.6v) case but you are applying it to the 'min'
(Vcc = 3.0v) row. Likewise for the max row.

  Regards,
  Stephen Peters
  Intel Corp.

>
>
> Happy new year IBISians,
>
> It's kind of silly but I can not reproduce arithmetics
> from the attached email. Here is mine:
>
>
> Vcc Vout Vtable
>
> min 3.0 from -3.0 to 6.0 from 6.0 to -3.0
>
>
> typ 3.3 from -3.3 to 6.6 from 6.6 to -3.3
>
>
> max 3.6 from -3.6 to 7.2 from 7.2 to -3.6
>
>
> Vcc is derived from range (denoted Vpower below)
>
> Vout changes from ( Vground - Vpower ) to (Vpower + Vpower )
> (see spec.) e.g. from ( 0 - Vcc ) to 2*Vcc
> e.g. from -Vcc to 2*Vcc
>
> Vtable = Vcc - Vout
>
> Conclusion: spec is inconsistent in this part.
>
> Nikolai Bannov
> Hspice group
> Avant! Corporation
>
> :-) From owner-ibis@server.eda.org Wed Jan 5 12:36 PST 2000
> :-) From: "Ross Pryor" <rpryor@nortelnetworks.com>
> :-) To: "'Stephen Nolan'" <s-nolan1@ti.com>, <ibis-users@eda.org>
> :-) Subject: RE: IBIS model creation
> :-) Date: Wed, 5 Jan 2000 14:33:28 -0500
> :-) MIME-Version: 1.0
> :-) Content-Transfer-Encoding: 7bit
> :-) X-Priority: 3 (Normal)
> :-) X-MSMail-Priority: Normal
> :-) Importance: Normal
> :-) X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2120.0
> :-)
> :-) Stephen,
> :-)
> :-) 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
> :-) --------------
> :-) Ross Pryor
> :-) Nortel Networks
> :-) Billerica, MA
> :-) (978) 288-3811
> :-) ESN 248-3811
> :-) rpryor@nortelnetworks.com
> :-)
>
Received on Thu Jan 6 12:32:35 2000