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[SI-LIST] S-parameter simulation in NSpice

From: Yu Liu <yu_liu@xxxxxxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Date: Wed, 01 May 2002 21:43:09 -0700

Dear SI engineers,

As a regular reader of this group, I've noticed some discussion on how
to combine package/board measurement data together with I/O circuitry
in order to accurately run circuit analysis. The difficulty lies mainly 
in two
parts: First, the package and board information are best represented by
scattering parameters, which is in frequency domain, while designers need
to analyze the circuit behavior in time domain; Second, existing Spice
cannot take S-parameters directly in transient simulation. So lumped-element
approaches (e.g. RCL, transmission line) is typically used. Such simplified
approach results in significant accuracy degradation for high-speed, wide-
band designs.

Nspice was developed to address these issues. With NSpice, designers can
efficiently use measured S-parameters in their normal Spice transient
simulation and obtain accurate results when compared with measurement
data.

NSpice Highlights

o) Takes S-parameter data file directly

o) Supports Spice elements/devices (including BSIM3 mosfet model)

o) Hspice-compatible input

o) Performs run-time timing/power/IR-drop checks

o) Runs on: Solaris7&8, RH-Linux 7 & up, HP-UX 11


If you are interested in learning more about the tool, please send an 
email to
mike_cabral@xxxxxxxxxxxxx (Phone: 650-969-4183) to get the ftp instructions.


Y. Liu
=====

Email: yu_liu@xxxxxxxxxxxxx
web: www.apache-da.com


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