FreeLists / si-list / [SI-LIST] Analog and Digital grounds

[Thomas McGonigle <temcgonigle@xxxxxxxxx>]

When I was coming up (longer ago than I care to admit to) I was taught the 
conventional wisdom that Analog and Digital signals should have seperate ground 
traces (later ground planes) which connect at a single point.  I have gathered 
that this is as old fashioned as using a single 0.1 uF capacitor for each power 
pin.
 
Will some kind people point me to some papers or other resources where I can 
learn what the current thinking is (and the theory behind it).  The latter is 
essential because trying to get some people to abandon the "tried and true" 
methods for something more up to date takes a lot of convincing.  
 
It is passing strange how many Luddites there are in the electronics industry.  
Everyone knows that electronics technology is changing at a rapid rate, but 
many managers and even working engineers want to use the conventional wisdon 
they learned years before.  
 
How odd is it that a 56 year old engineer can't convince a thirty something 
manager that times have changed.  
 
By the way, I joined this list hoping to learn some things, and it has been 
great.  Thanks to all you who are willing to share your expertise.
 
 

Thomas E. McGonigle
8305 48th Avenue
College Park, MD 20740-2401
tmcgonigle@xxxxxxxx
301-441-1175
__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com 

------------------------------------------------------------------
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 FAQ wiki page is located at:
                http://si-list.org/wiki/wiki.pl?Si-List_FAQ

List technical documents are available at:
                http://www.si-list.org

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