Pcb Layout Rule For Mix SignalPartitioning and layout of a mixed signal PCB Component placement and partitioning, combined with routing discipline, are the keys to success in laying out a mixedsignal PCB―not the isolation of the ground planes. major problem is that you cannot route a trace over the split in the plane. If you do, you will discover that both radiation and crosstalk will increase dramatically. Traces routed across a slot split as shown in Figure 1, what will be the current return path? Assuming that the two planes are connected together somewhere, usually at a single point, the return current will have to f low in a large loop. HF currents flowing in large loops produce radiation and high ground inductance. Low-level analog currents flowing in large loops are susceptible to interference. An exceptionally ……