FreeLists / si-list / [SI-LIST] transmission line characteristic impedance (Zo) value

[si-list] || [Date Prev] [09-2003 Date Index] [Date Next] || [Thread Prev] [09-2003 Thread Index] [Thread Next]

[SI-LIST] transmission line characteristic impedance (Zo) value

From: "pawankalyan_india" <pawankalyan_india@xxxxxxxxxxx>
To: si-list@xxxxxxxxxxxxx
Date: Sat, 06 Sep 2003 07:42:22 -0000

Hi
I am new to signal integrity analysis.
I came across the value of Zo = 50 ohms in many design notes. 
Q1) can anyone tell me why this value is chosen?
Q2)why this value cannot be any other value say, 100 ohms. 
Q3)Is the value of 50 ohms has anything to do with the PCB 
maufacturing process?

regards
pawan kalyan





------------------------------------------------------------------
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