Adafruit PAM8302 - Mono 2.5W Class D Audio Amplifier

by Liz Clark

published June 03, 2022, last edited June 26, 2024

posted in Components Adafruit Products Breakout Boards/ Amplifiers/Sound

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10

Beginner

Product guide

Pinouts

This board is an audio amplifier and as a result, does not require code to work. It accepts an audio signal and outputs it to a speaker.

Power Pins

VIN - This is the power pin. To power the board, give it 2.0V-5.5VDC.
GND - This is common ground for power.

Input Pins

A+ and A- - Audio inputs for the amplifier. Signal goes through 1.0uF capacitors, so they are fully 'differential'. If you don't have differential outputs, simply tie the A- to ground.

Shutdown Pin

SD - The shutdown pin. Can be used to power down the amplifier by tying to ground.

Output Pins

+ and - - Amplifier output pins. They are spaced to allow for a terminal block to be soldered in place. The output is "Bridge Tied" so that the output connects directly to the speaker pins, no connection to ground.

Page last edited June 26, 2024

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