So i made a few 2 layer pcb's and now i wanna try a 4 layer one, i searched on the internet, but i found some conflicting information, so signal traces are on the top and bottom, power traces on the inner layers, is this correct?
So one inner layer can be a ground plane, and the vcc one also better to use a plane or just traces?, harder if there are different voltages.
Also what are useful tips to avoid emi and other interferences, because almost every pcb i made had a noise problem
Decoupling caps on signal traces?, Shortest possible trace lenght and short current return path?, adequate distance between traces?, rc/lc filters?
So one inner layer can be a ground plane, and the vcc one also better to use a plane or just traces?, harder if there are different voltages.
Also what are useful tips to avoid emi and other interferences, because almost every pcb i made had a noise problem
Decoupling caps on signal traces?, Shortest possible trace lenght and short current return path?, adequate distance between traces?, rc/lc filters?