A good PCB layout for the PAM8302AAYCR involves keeping the audio signal traces short and away from the power supply lines, using a solid ground plane, and placing the device close to the speaker. A 4-layer PCB with a dedicated ground plane is recommended.
To ensure stability, make sure to follow the recommended component values and PCB layout guidelines. Also, add a 10nF capacitor between the BYPASS pin and GND, and a 1uF capacitor between the VIN pin and GND. Additionally, use a low-ESR capacitor for the power supply decoupling.
The maximum power dissipation of the PAM8302AAYCR is dependent on the ambient temperature and the thermal resistance of the PCB. As a general guideline, the device can dissipate up to 2.5W at 25°C ambient temperature with a 4-layer PCB. However, this value can be derated based on the actual operating conditions.
No, the PAM8302AAYCR is not designed to be used in a bridged configuration. It is a single-ended amplifier and should be used in a single-ended configuration only.
The recommended input coupling capacitor value is 1uF to 10uF, depending on the specific application requirements. A larger capacitor value can help to block DC voltage and reduce noise, but may also increase the startup time of the amplifier.