The UCD3138 device is a highly integrated controller with a large number of mixed signals. It is important to group each pin, select good components, have appropriate connections to each pin, and make good component placement on the PCB to reduce noise coupling and to prevent chip mal-function. First, group all digital circuitry and analog circuitry. Second, place digital circuitry close to each other, place analog circuitry close to each other, and then make connections among them by a solid plane(SGND). To achieve a robust design, TI recommends at least a 4-layer board.

Next, layout considerations and examples are provided for some critical pins or signals.