![]() ![]() This ensures that return currents always travel as near as possible to their corresponding trace. Every Signal Trace is Within One Signal Layer of a Continuous Reference PlaneĮvery trace in the stackup should either be adjacent to a reference (power or ground) plane, or only separated from the closest reference plane by one signal layer. It increases the accessibility of routing connections to power pins and bypass capacitors and provides a low-impedance path for return currents. Including an optional VCCo plane (continuous, dedicated, or semi-dedicated) greatly simplifies board layout. Make the connection of low-impedance vias to device GND pins very convenient.Īll of these are very important in for keeping ground noise at a minimum, both on the board and in the devices.Every board must have at least one continuous ground plane to: ![]()
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