![]() If possible, run multiple supply lines in the same area of the board and remember that if the ground plane is run over a large section of one layer, it can have a positive impact on cross-talk between lines running above it on an adjacent layer. It applies plenty of copper to common connections and helps ensure power flows as effectively as possible with minimal impedance or voltage drop, and that ground return paths are adequate. Using pours on the power plane is a quick and easy option in most PCB design software. ![]() Rule #3: Whenever possible, use a power plane to manage the distribution of power lines and ground. This applies particularly in analog and high-speed digital circuitry where impedance and parasitic effects will always play a part in limiting your system performance. This rule applies even if it means going back over parts of the layout again to optimize track lengths. Rule #2: Keep trace lengths as short and direct as possible
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