Dileep Divekar wrote:
>
> Arpad Muranyi wrote about the simulator being smart enough
> to fit an equation to the given data. The point I am trying
> to make is that sufficient data need to be provided. For
> example, a straight line is the simplest curve in two dimensions.
> The equation of a straight line has two unknowns. Therefore,
> at least two data points or two pieces of information are needed.
> There are infinite ways of drawing a straight line thru a single
> point. There is no unique way of defining a straight line in this
> case no matter how smart the fitting method is. Thus, given only
> one V-t waveform, it is not possible to predict many V-t waveforms
> for all possible loading conditions.
> ------------------------------------------------------------
> Dileep Divekar
> Applied Simulation Technology, Inc.
> 2188 Bering Drive
> San Jose, CA 95131
>
> Phone - (408)-434-0967 x 100
> Fax - (408)-434-1003
> Email - dileep@apsimtech.com
> ------------------------------------------------------------
At Quad Design we use two VT waveforms. For standard CMOS this means one
to 5V and one to 0V (it is different for TTL and ECL). We have discussed
the fact that this sort of information needs to be put in a cook book
but I guess we are all busy feeding our families.
regards,
jon
Received on Fri Nov 1 19:18:05 1996
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