Rich, I read the article. I have a couple of exceptions to it. 1) It recommends joining returns off-board. This is good for low-frequency noise, but can greatly exacerbate high frequency noise problems, especially in our invariably mixed signal systems and can have disastrous consequences in a hot-plug environment. The eleventh commandment should be "Plan, know and obey thy grounding scheme." 2) The article goes back to the 90 degree angle, but makes no reference to frequency ranges. Regards, Steve. At 01:31 PM 6/14/01 -0400, you wrote: >Good Article --- and it has the 90 Deg. bend controversy in it ! > >Rich > >-----Original Message----- >From: si-list-bounce@xxxxxxxxxxxxx >[mailto:si-list-bounce@xxxxxxxxxxxxx]On Behalf Of cadpro2k@xxxxxxxxxx >Sent: Thursday, June 14, 2001 1:52 PM >To: si-list@xxxxxxxxxxxxx >Subject: [SI-LIST] The PCB is a component > > >Hi all, > >I just got notified of this article written by someone at TI. Might be >old news, but it's an interesting article. Enjoy. > >http://www.chipcenter.com/analog/c060.htm > >Mitch >_____________________________________________________________ >Tired of limited space on Yahoo and Hotmail? >Free 100 Meg email account available at http://www.dacafe.com > > >------------------------------------------------------------------ >To unsubscribe from si-list: >si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >For help: >si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > >List archives are viewable at: //www.freelists.org/archives/si-list >Old list archives are viewable at: http://www.qsl.net/wb6tpu > > >------------------------------------------------------------------ >To unsubscribe from si-list: >si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field >For help: >si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field > >List archives are viewable at: //www.freelists.org/archives/si-list >Old list archives are viewable at: http://www.qsl.net/wb6tpu > ------------------------------------------------------------------ To unsubscribe from si-list: si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field For help: si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field List archives are viewable at: //www.freelists.org/archives/si-list Old list archives are viewable at: http://www.qsl.net/wb6tpu