Try Signal Integrity list about this question.
There was a lot of traffic about grounding in the near past.
http://www.freelists.org/cgi-bin/webpage?webpage_id=si-list
Rolf Molitor
Systemelektronik i2e
-----Urspr�ngliche Nachricht-----
Von: "Jerome DUMAS" <[EMAIL PROTECTED]>
An: "Protel EDA Forum" <[EMAIL PROTECTED]>
Gesendet: Dienstag, 26. Juni 2001 14:56
Betreff: [PEDA] Ground Planes Connection
Hi All,
May be a little bit off-topic, anyway here is my question :
The pcb I'm currently designing features 3 differents ground planes
(digital, analog audio, and radio-frequency FM).
I've separated each plane by about 2mm gaps, my question is how to connect
the 3 ground planes, and where ?
For now, analog and digital planes are connected by a 2mm pcb wire directly
under the codec (pcm3002), and the RF ground plane is connected to the
analog ground plane through a 1nF ceramic cap (in order to avoid RF & audio
coupling).
I'm not sure that these connections are the best way to do, does I have to
connect the 3 planes with a "star" connection ?
Any help would be really apreciated.
Cheers,
Jerome
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