[sdiy] split ground plane

[Daniel Kruszyna]

Daniel Kruszyna <dan at krue.net> wrote:
> I'm working on a pcb with separate analog and digital ground planes.

Well, it's been a while, but I'm now starting to work on this layout again.
I've done a lot of reading, and most sources recommend to NOT split the ground
plane. They recommend spliting the power plane instead, and keeping each set
of signals separate in the layout.

This board is going into a modular synth, with separate -15v/+15v and +5v
supplies. I've tied the grounds of the two supplies together at their source.
Might it cause problems if the grounds are also connected at each module?
Shouldn't the grounds be connected at only one point?

Additionally, wouldn't a signal trace that crosses a split ground plane be
simillar to a patchcord in a modular?

-- Daniel