Re: about offseting the pu and pc

Hi Syed,

s2ibis2 uses the supply voltage corresponding to the current column.
For example, Vcc=3.0v for the min current column; Vcc=3.6v for the max column.

This would make all three curves go through the origin.

Regards,
Arthur Wong
IDT

> From owner-ibis@vhdl.vhdl.org Tue Mar 4 11:51:05 1997
> Date: Tue, 4 Mar 97 11:20:32 PST
> From: huq@rockie.nsc.com (Syed Huq)
> To: ibis-users@vhdl.org
> Subject: about offseting the pu and pc
> Content-Length: 570
>
> Hi,
>
> I have a ques on the Vcc offseting of the pu(Pullup) and
> pc(Power Clamp) V/I data.
>
> I am creating a CMOS model with 3.3V supply. This means
> TYP=3.3V, MIN=3.0V and MAX=3.6V
>
> There is 'one' voltage table for the three current table.
> When I use the Vtable = Vcc - Vmeas to offset the voltage
> table, 'Which' Vcc should be used ??
>
> If I use 3.3V, only the TYP curve goes thru the 0,0 point
> and the MIN and MAX will not ! The 0,0 point is when
> Vcc=Voh (pu curve)
>
> I am not sure how s2ibis2 handles this issue.
>
> Pls comment.
>
> Regards,
> Syed.
> National Semiconductor Corp.
>
 
Received on Tue Mar 4 12:36:51 1997