FreeLists / si-list / [SI-LIST] DC resistance calculation of returen path

[si-list] || [Date Prev] [11-2002 Date Index] [Date Next] || [Thread Prev] [11-2002 Thread Index] [Thread Next]

[SI-LIST] DC resistance calculation of returen path_equivalent width?

From: "Sogo Hsu" <sghsu55@xxxxxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Date: Mon, 04 Nov 2002 14:22:25 -0000

Hi SI gurus,
I have a question regarding DC resistance calculation of return 
current path. It is said the return current path would be the least-
length path between driver and receiver. At this moment, I would like 
to estimate the required trace with to match voltage drop spec, for 
instance, USB 2.0. For conductor signal trace, the DC resistance 
would be
Rho * L/ (W*t), 
but what=A1=A6s the equivalent width for return path? Thank you in 
advance. 
Best regards,
Sogo Hsu


------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages 
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu