Ground planes and star grounds on FV-1 pcb

Started by SpaceCowboy, May 18, 2013, 01:39:22 PM

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SpaceCowboy

After reading some spec sheets and guidelines about PCB layout, I've noticed that they mention digital and analog ground be separate and connected at a point close to the power source.
Now, wrt the FV-1 chip, on my PCB design the analog components, namely opamp and audio signal are grounded on the back plane.

The question is should I do a separate star ground for the FV-1 chip and the EEPROM, since they are digital? Thanks.
Bleh.

jk-fm

Best practice is to use a solid ground plane, and keep digital/analog traces away from each other. If your ground plane has splits, don't route signals over them.

http://www.hottconsultants.com/techtips/split-gnd-plane.html

Ice-9

From what I have been led to believe all grounds in the FV-1 share a common connection, so it is not necessary to keep digital and analogue grounds separate. If you start to add other digital chips to the circuit like micro controllers etc, then you may want to look a bit deeper separating the grounds.
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