RE: [SI-LIST] : Power Plane Inductance

About this list Date view Thread view Subject view Author view

From: [email protected]
Date: Thu Jul 13 2000 - 14:42:03 PDT


Doug,
Do you really believe the inductance of a connection that is 0.5'(feet?) to
1.0"(inch) from via to cap is negligable in all cases? Don't you think the
connection method makes a difference? IE, thin trace VS unbroken planes.

Aubrey Sparkman
Signal Integrity
[email protected]
(512) 723-3592

> -----Original Message-----
> From: Doug Brooks [mailto:[email protected]]
> Sent: Thursday, July 13, 2000 12:08 PM
> To: Moran, Brian P; [email protected]
> Subject: Re: [SI-LIST] : Power Plane Inductance
>
>
> At 02:19 PM 7/12/00 -0700, you wrote:
> >Hi All,
> >
> >I am trying to do some back of the envelope power delivery
> analysis, and I
> >need a number for inductance from a BGA package pad pin escape, to a
> >decoupling capacitor, located 0.5' to 1.0" from the via site.
>
>
> Well, my "back of the envelope" answer is that whatever it is, it is
> negligible compared to the rest of the path and can be ignored!
>
> Doug Brooks
>
> .
> ************************************************************
> Doug Brooks' book "Electrical Engineering for the Non-Degreed
> Engineer" is now available. See our web site for details.
> .
> 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 : Wed Nov 22 2000 - 10:50:46 PST