imanjl
Junior Member level 1
I’m working on a Mixed signal 4L PCB using this stack-up:
1L: Signal
2L: GND plane
3L: Power plane (split)
4L: Signal
As you see in the pic The board has two power sources, SMPS for analog and Linear for Digital.
1-Is it a good idea to extend the GND and Power plane under noisy SMPS circuits? Or Should I make this area copper-less in those layers?
2-What about the area under linear regulators?
tnx