PAM8403HEVB User Guide9. PCB Layout GuidelinesGrounding (1) Use plane grounding or separate grounds (2) Do not use one line connecting power GND and analog GND (3) Output noise grounds must tie to system ground at the power in exclusively. (4) Signal currents for the inputs need to be returned to quite ground. This ground only ties to the signal components and the GND pin. Power SupplyOthers (1) The power supply capacitors (C2, C3, C9, C1, C10) need to place very close to the PAM8003’s pins. (2) Input capacitors (C5, C7) place closed to input pin as near as possible 10. PCB Layout ExampleTop Layer This application note contains new product information. Diodes, Inc. reserves the right to modify the product specification without notice. No liability isassumed as a result of the use of this product. No rights under any patent accompany the sale of the product.