I suggest that you had better not separate planes.
Because it is quite easy to create bad signal return paths.
This creates a slot antenna that radiates and receives noise.
It also contributes to ground bounce.
luigi.rodorigo
2016/9/9 11:35:35
You need to make sure that you actually have a component on the schematic that connects them. They won't show as separate nets when you export the netlist if you have them connected by a schematic wire. So this is really important to keep in mind.
bobsled2010
2016/9/5 13:05:40
You can create three separate, non overlapping filled zones on your ground layer. And let the three zones set to net AGND, DGND, and GND seperately.
Barbara Seria
2016/11/25 19:25:46
I suggest that you had better not separate planes. Because it is quite easy to create bad signal return paths. This creates a slot antenna that radiates and receives noise. It also contributes to ground bounce.
luigi.rodorigo
2016/9/9 11:35:35
You need to make sure that you actually have a component on the schematic that connects them. They won't show as separate nets when you export the netlist if you have them connected by a schematic wire. So this is really important to keep in mind.
bobsled2010
2016/9/5 13:05:40
You can create three separate, non overlapping filled zones on your ground layer. And let the three zones set to net AGND, DGND, and GND seperately.