My PCB is for 200MHz and digital circuit only.gam said:It really depende on the application, the cost restriction and complexity involved and of course the frequency wether it is Analog or Digital or mixed circuit.
If you specify more maybe we can help with suggestions
8O only two layers. so how u do highspeed design cktsmrcube_ns said:Contact firms who will make your PCBs and ask them how many layers they can make so thats max num of layers which you can apply.
In my country its 2 layers max.