Texas Instruments provides a recommended PCB layout in the datasheet, but it's also important to follow general high-frequency PCB design guidelines, such as keeping the signal path short, using a solid ground plane, and minimizing parasitic inductance.
The gain setting depends on the specific requirements of your application. The TPA6130A2YZHT has a fixed gain of 20dB, but you can adjust the gain by adding external resistors. Consult the datasheet and application notes for guidance on selecting the right gain setting.
The maximum power dissipation of the TPA6130A2YZHT is dependent on the ambient temperature and the thermal resistance of the package. According to the datasheet, the maximum power dissipation is 1.4W at 25°C. However, it's essential to perform thermal calculations and consider the specific operating conditions of your application.
The TPA6130A2YZHT has built-in EMI filtering, but additional filtering may be necessary depending on your specific application. Consider adding external filters, such as RC filters or ferrite beads, to reduce noise and EMI. Also, ensure proper grounding and shielding of your circuit.
The recommended input and output coupling capacitor value depends on the specific requirements of your application. A general rule of thumb is to use capacitors with a value of 1uF to 10uF, but consult the datasheet and application notes for more specific guidance.