[sdiy] Various GND planes in PCB layout..

[Bert Schiettecatte]

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