[SI-LIST] : Re: connector substitution for high speed signals

Chee Yee Chung (chee.yee.chung@intel.com)
Mon, 07 Jun 1999 11:34:13 -0700

To be electrically equivalent, the connector's partial inductance,
capacitance and resistance matrix should match. see Multi-Conductor
Transmission Line (Author: Clayton Paul) for definition of matrix, eg.

this can usually be achieved if you have a 3D modeling EM tool, and the
geometrical/material information of the two connector (request from
connector supplier). the matrix should have at least the amount of pins
such that you can duplicate it to all pins.

-----Original Message-----
From: John@quantatw.com [mailto:John@quantatw.com]
Sent: Sunday, June 06, 1999 7:15 PM
To: si-list@silab.eng.sun.com
Subject: [SI-LIST] : connector substitution for high speed signals

Hi All SI Experts,

One question.

If I want to use one connector to replace another connector because of
cost
issue, what criteria are needed to prove they are electrically
equivalent.

Especially the substitution is happened for high speed / low swing
signals,
such as RAMBUS signals, which have 200ps for rising time.

Any comments or suggestions are appreciated.

Thank you for helps in advance.

John Lin
Quanta Computer Inc.
CAE Engineer
Tel: 1+886+03+3979000 ext. 5183
Fax: 1+886+03+3975000
Email: John@quantatw.com

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