V-AMS Compact Modeling Extensions subcommittee
Minutes of Feb. 24, 2004

Attendees:
Geoffrey Coram, Analog Devices
Ilya Yusim, Cadence
Jim Barby, U Waterloo
Al Davis, Kettering U


1) Approval of previous minutes (Feb 10)

2) Limiting

Jim asked whether the main AMS committee has an opinion on
the proposal last time to add $fetlim and $pnjlim (and maybe
$templim).  I will check with Sri.

Before we settle on this proposal, however, we need to make
sure that it actually accomplishes what we want.  I have not
yet started to work with the CircuitSim93 examples, but I
have downloaded the Silvaco models from
http://www.silvaco.com/downloads/verilogADownloads.html
so that I only need MOS level2.

Jim will look into the CircuitSim93 examples to see which ones
needed help in convergence (dynamic ramping of some voltage
sources); I want to test pure DC Newton.

Al noted that he thinks the LRM should not have "fetlim" or
"pnjlim" because they reference specific devices.  However,
fetlim covers so many regions with different nonlinearities
(subthreshold=exponential, linear, saturation=quadratic in Vg)
that it would be hard to pick a meaningful yet generic name.

3) Compact Model Council

The next CMC meeting is in Boston, and I (Geoffrey) am to give a
presentation on Verilog-A for compact modeling.  Note that the
CMC is March 12, following Nanotech 2004 (March 7-11).

4) Next meeting

If I have anything to report on limiting, then we may have a
meeting on March 9.  Otherwise, we will talk next on March 23.