[SI-LIST] Question about split gnd planes
- From: Ed Troy <etroy@xxxxxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 25 May 2006 16:38:33 -0400
If you have a circuit board that requires a split gnd plane over a
small section of the board, and you have several ground planes,
should only one have the split (the one nearest the side containing
the components that require analog ground) while the rest of the
ground planes are continuous, or should the split section be on all
ground layers? I would think that you should only have it on one
layer. Also, if it should only be on one layer, I would imagine it
would be best to connect it to the digital ground with one, and only
one, via. Is that generally correct? What are some good references
for layer stackups, etc? I know I saw one, once, but can't remember where.
Ed
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