At the expense of sounding ignorant, what are the problems caused by
splitting gnd planes?  I have to do this constantly, mainly under
opto-isolators, to seperate the part of the board that is our product from
the outside world.  I hope you can get some online answers so that everyone
has a chance to check the data.  Thanks.
Richard

 ----------
From: dschaefer
To: DesignerCouncil
Subject: [DC] !!! SPLIT GROUND PLANES !!!
Date: Tuesday, July 21, 1998 8:25AM

I'm looking for information regarding SPLIT GROUND PLANES.

Experts on grounding, EMI, EMC are teaching that gaps in ground planes
create serious problems.  Component manufacturers, however, continue to
recommend placing gaps under components (such as A/D's and D/A's).

Can anyone:

 - point me in the direction of theoretical reference material
 - relate their experiences / practices

Thanks,
 --
Dave Schaefer                                                      Phone
: (204)631-2298
Senior PWB Designer                                         FAX :
(204)631-2475
NORTEL - Broadband Wireless Access          email : [log in to unmask]
37 Stevenson Road
Winnipeg, MB R3H 0H9

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