[SI-LIST] Pkg Power Plane Analysis

From: "Jim Antonellis" <janton@xxxxxxxxxxxxx>
To: "Si-List" <si-list@xxxxxxxxxxxxx>
Date: Tue, 7 Jun 2005 20:08:30 -0400
Hello to all,

My end goal was to perform a frequency based analysis of the 
power planes in a package model such that I could determine the
upper band limit (due to the package) to the system decoupling 
network. I wanted this package based limit even if it turns
out to exceed the upper limit imposed by the system level
decoupling capacitors (effective/mounted inductance) for
completeness of the PDS spectrum.

I was provided with a SPICE model that is essentially lumped
with subckts for bumps, balls and vias that are instantiated
many times in parallel (e.g. M=736) to account for the number
of these structures that are in parallel. I have been using 
both the .NET and naitive SPICE output statements to look at 
the S11 and S21 of said model without great success.

Before I through in the towel (and come back here to ask what
I may be doing wrong) would anyone be willing to send me any
low-Z power plane models that are already validated so I can
try those in my SPICE test fixture first?

Regards,
Jim Antonellis


-
Jim Antonellis   janton@xxxxxxxxxxxxx
Sandburst Corp   www.sandburst.com
Office: 978.689.1669 
Cell: 978.618.4745

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[SI-LIST] Pkg Power Plane Analysis

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