RE: [SI-LIST] : trace width for clock routing- wider/narrower?

About this list Date view Thread view Subject view Author view

From: Grasso, Charles (Chaz) ([email protected])
Date: Tue Mar 14 2000 - 10:39:30 PST


The skin effect will result in increased resistive
losses as one heads into the Twilight Zone.

Making the trace wider makes sense from that standpoint.

-----Original Message-----
From: Doug Brooks [mailto:[email protected]]
Sent: Monday, March 13, 2000 1:39 PM
To: [email protected]
Subject: Re: [SI-LIST] : trace width for clock routing- wider/narrower?

Point well taken.
Do ANY rules of thumb apply up there?
Doug

  I've routed clocks on very wide lines specifically
>to keep the edge rates from rolling off due to skin effect.
>These were faster than "normal" clocks (up to 1.2 GHz) with
>GaAs drivers. Again points out the problems of a "rule of
>thumb". One persons clock frequency is not another persons
>clock frequency. As usual it all depends on the details.
>
>Jerry Johnson
>Senior Staff Engineer
>Teradyne Inc.

.
************************************************************
See our updated message re in-house seminars on our web page
.
Doug Brooks, President [email protected]
UltraCAD Design, Inc. http://www.ultracad.com

**** To unsubscribe from si-list or si-list-digest: send e-mail to
[email protected]. In the BODY of message put: UNSUBSCRIBE si-list
or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****

**** To unsubscribe from si-list or si-list-digest: send e-mail to [email protected]. In the BODY of message put: UNSUBSCRIBE si-list or UNSUBSCRIBE si-list-digest, for more help, put HELP.
si-list archives are accessible at http://www.qsl.net/wb6tpu
****


About this list Date view Thread view Subject view Author view

This archive was generated by hypermail 2b29 : Thu Apr 20 2000 - 11:35:35 PDT