From: Farrokh Mottahedin ([email protected])
Date: Mon May 15 2000 - 15:00:04 PDT
Brian,
Your design guideline # 2 can't be right. A differential pair is INTENDED
to be less sensitive to crosstalk and you get low radiation and rejection
with tight coupling.
Farrokh Mottahedin
Quantum Corp.
500 McCarthy Blvd.
Milpitas, CA 95035
(408)324-7934
[email protected]
-----Original Message-----
From: Brian Seol [mailto:[email protected]]
Sent: Monday, May 15, 2000 9:38 AM
To: [email protected]
Subject: [SI-LIST] : Differential Clock Signal Pair
Hi everyone,
I have a simple question about trace layout design for a differential clock
signal pair of high-speed CMOS memory packages. I have two design
guidelines for that as follows:
1. SPACING between a differential clock signal trace pair must be
MINIMIZED as well as matched in length in order to reduce noise.
2. Differential clock signal trace pair must be matched in length in order
to achieve matched electrical characteristics, but SPACING between
them must be MAXIMIZED in order to reduce crosstalk noise.
Which do you prefer?
Thanks and regards,
Brian
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