[SI-LIST] Re: Question about split gnd planes
- From: "Lee Ritchey" <leeritchey@xxxxxxxxxxxxx>
- To: "Ed Troy" <etroy@xxxxxxxxxxxxxxx>, si-list@xxxxxxxxxxxxx
- Date: Thu, 25 May 2006 15:22:24 -0700
What would prompt you to split thr ground planes? Is there a known problem
that this will fix? And not create a new one?
> [Original Message]
> From: Ed Troy <etroy@xxxxxxxxxxxxxxx>
> To: <si-list@xxxxxxxxxxxxx>
> Date: 5/25/2006 1:41:15 PM
> Subject: [SI-LIST] Question about split gnd planes
>
> 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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