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

The points are simulated, but hardware measurements have confirmed this
characteristic in real hardware. Each point on the curve is DC.

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Date: Fri, 01 Sep 1995 11:52:10 MST
To: Arpad_Muranyi@ccm.fm.intel.com
cc: ibis@vhdl.org
From: sung.oh@tempe.vlsi.com
Subject: Re: Re[2]: On Non-Monotonic Drivers
Message-Id: <9509011852.AA02581@sedona>
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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>From Arpad_Muranyi@ccm.fm.intel.com Fri Sep 1 08:43 MST 1995
Date: Fri, 01 Sep 95 08:08:00 PDT
From: Arpad Muranyi <Arpad_Muranyi@ccm.fm.intel.com>
To: fvance@FirePower.COM, bob@icx.com
Cc: ibis@vhdl.org, si-list@silab.eng.sun.com
Subject: Re[2]: On Non-Monotonic Drivers
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Text item:

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 achieve
d
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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Cc: ibis@vhdl.org, si-list@silab.eng.sun.com
Subject: Re: On Non-Monotonic Drivers
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