Re[4]: On Non-Monotonic Drivers

Text item:

Sung,

I was told that this is the curve that you would get in the lab if you swept the
device with a programmable DC supply and measured the current at each voltage
point.

Arpad
==============================================================================
Arpad,

It is a measured curve or a simulated one?
SPICE simulations may have a negative resistance in the saturation
region depending on velocity saturation parameters, which does not
happen in real devices.

Sung

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One example is one of IBM's process in which the shape of the I-V curve looks
like the curve with the "*" vs. the normal shape shown with "-" (this is shown
here with their permission).

                          _ _-----------------
                          *
                    * *
                 * * * * * * * * *
               *
              *
             *

Even though IBM's circuit is not known to me, it seems that this can
be achieved
by some kind of feedback. I agree with Jon Powell, it is important
to know the
timing characteristics of this feedback path, however, if it is "instantaneous"
,
I think it could be ignored.

Arpad
==============================================================================
Does anyone else have an example of a non-monotonic output buffer?

Fred Vance

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Subject: Re: On Non-Monotonic Drivers
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Subject: Re: Re[2]: On Non-Monotonic Drivers
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