Re: [sdiy] Various GND planes in PCB layout..

[Roman]

my advice is don't put anything in GND path, God forbid inductor.
It's more than welcome in power supply line, but inductor in ground plane can cause trouble.
Connect all grounds at power entry of the PCB. If digital section is somewhere in the middle, use thick trace, like 200mills or so to lead GND to that point.

Roman

---- Wiadomość Oryginalna ----
Od: Bert Schiettecatte <bert at percussa.com>
Do: synth-diy at dropmix.xs4all.nl
Data: Thu, 1 Sep 2005 00:32:00 +0200
Temat: [sdiy] Various GND planes in PCB layout..

> Hi all,
> 
> I'm still working on a PCB layout here, and there is some digital stuff
> on it as well as analog stuff (opamps, etc). I thought it was a good
> idea to give the analog sections their own ground plane, and connect the
> ground and power to the rest of the circuit through an inductor (1.2uH).
> Is this a good idea? Should I use something else instead of an inductor?
> What about a ferrite bead? How do people connect ground planes of
> different sections of a pcb layout?
> 
> A big thank you to all the people who responded to my question about the
> mic preamp! If you ever make it to Belgium, there will be some cold beer
> waiting ...
> 
> Thanks!
> bert
> 
>