RE: [SI-LIST] : What's your favourite Screwy SI Concept?

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From: Chris Heard (chris_heard@cereva.com)
Date: Mon Jan 10 2000 - 11:10:31 PST


Here's another...

Use a ground trace in between signal traces to reduce crosstalk....

Chris

-----Original Message-----
From: owner-si-list@silab.eng.sun.com
[mailto:owner-si-list@silab.eng.sun.com]On Behalf Of Andrew Phillips
Sent: Wednesday, January 05, 2000 8:17 AM
To: SI-LIST
Subject: [SI-LIST] : What's your favourite Screwy SI Concept?

Having been following this list for several years now, and coming up
against plenty of signal integrity issues with my work along the way - I
always find it interesting to see how many confused or even totally
bogus, yet often quoted, design 'philosophies' there are floating about
in this field -

e.g. connect a decoupling cap directly to the power/gnd pins of a device
to prevent noise currents from spreading onto the power planes rather
than dropping vias directly to the plane.

I would be interested to hear other people's favourite 'Screwy SI
Concept' - why its screwy and why you think it has hung around in the
literature confusing everybody.

I'll put together a summary if enough people send me stuff.

Cheers,

Andrew Phillips
Supercomputing Systems AG
Zurich, Switzerland

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