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Advantages from 4 to 6 layer
I'm working on re-designing someone else's mixed signal board design and having a bit of an issue trying to get through some noise issues. Currently I've got the power supply noise issues cleared up however, now I can see a noise generated on the 5V system, or possibly the power/digital ground plane, that is a from our transmit pulse.
The board currently has Signal(1), GND(inner-1), Power(inner-2,+5,+/-24). and signal with ground polygons on the bottom. We also have +/-15 on the board that is routed through discrete lines on the top and bottom.
Would it be an advantage to work 6 layers, and if so would I put the +/-15 on the same plane with the +/-24 or up next to the +5? Any suggestions would be greatly appreciated.
The board currently has Signal(1), GND(inner-1), Power(inner-2,+5,+/-24). and signal with ground polygons on the bottom. We also have +/-15 on the board that is routed through discrete lines on the top and bottom.
Would it be an advantage to work 6 layers, and if so would I put the +/-15 on the same plane with the +/-24 or up next to the +5? Any suggestions would be greatly appreciated.
Discussion started by Mike Burr , on 13 May 05:39 AM
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