Re: V/T Question

Christian Klein wrote:
>
> Greetings everyone I am new to this list and IBIS, so I have a few
> questions regarding model making.
> One question is on extracting rising and falling waveforms. In the
> cookbook (pg. 11) it says: "If the device does not have enough drive
> capability to make a significant output transition then a higher value
> of load resistance may be used,..."
> I am unsure about the words "significant output transition". Does it
> mean not reaching the Data Sheet Vol or Voh?

Nothing so clear-cut.

It means that if the peak delta-V is MUCH less than the open-circuit swing
(supply voltage) then you've lost too much detail and should change the
loading to get more. A pretty good target is to have they TYP swing
be about half of supply.

-- 
D. C. Sessions
dc.sessions@vlsi.com