Texas Instruments provides a recommended PCB layout in the TPA6100A2DR evaluation module documentation, which includes guidelines for component placement, trace routing, and thermal management to minimize noise and ensure optimal performance.
The gain setting depends on the input signal level and the desired output power. The TPA6100A2DR has a fixed gain of 20dB, but you can adjust the gain by adding external resistors. Use the gain calculation formula provided in the datasheet to determine the required gain setting for your application.
The maximum power dissipation of the TPA6100A2DR is dependent on the ambient temperature and the thermal resistance of the PCB. According to the datasheet, the maximum power dissipation is 2.5W at 25°C ambient temperature. However, you should perform thermal calculations and consider heat sinking to ensure the device operates within safe limits.
The TPA6100A2DR has an internal undervoltage lockout (UVLO) circuit that disables the device when the supply voltage falls below 2.5V. For overvoltage protection, you can add an external voltage regulator or a transient voltage suppressor (TVS) diode to limit the voltage to the recommended maximum rating of 6V.
The recommended input coupling capacitor value is 1uF to 10uF, depending on the input signal frequency and impedance. A ceramic or film capacitor with a high dielectric strength and low equivalent series resistance (ESR) is recommended to minimize signal attenuation and distortion.
TPA6100A2DR datasheet
by Texas Instruments
