Miniature 2 Channel * 3 Watt PAM8403 Class D Stereo Audio Power Amplifier Module Board with Power Switch and Volume Control Potentiometer

This miniature PAM8403 module is a 3W, class-D stereo audio amplifier. It offers low THD+N, allowing it to achieve high-quality sound reproduction, all in a form factor about the size of a US postage stamp. It can operate from a 5V USB power supply or batteries, and includes a power switch and volume control potentiometer for ease of use.  

It can be used in any DIY design requiring a miniature audio amplifier, especially portable and mobile applications operating on battery power.  

Features:
  • Can use the computer USB port, USB power bank or a mobile phone charger to supply the 5V support power
  • Battery power can also be used
  • High efficiency: 90%
  • Provides 3W (left channel) + 3W (right channel) output power into a 4Ω speaker load and 5V power supply
  • CMOS class D amplifier design for high efficiency and low cost
  • Noise canceling circuit built into the amplifier board
  • Power on / off without popping noise
  • Integrated power switch and volume control (turn knob fully counter-clockwise to turn off)
  • Module has short-circuit current protection, under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C)
Specifications:
  • Operating voltage: 2.5V-5.5V
  • Speaker Load: 4-8 Ohms
  • Size: 29 x 20 x 12.5 mm (L x W x H);  29 x 35 x 12.5 including volume control knob
  • Volume control potentiometer shaft diameter: 6mm
  • Net weight:8g

Package Contents:
1 x PAM8403 Class D Stereo Audio Power Amplifier Module with Volume Control Potentiometer
Specifications and usage instructions

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Note:
This module has a floating output, therefore left and right channel "negative" connections should not be connected together. The module is designed for driving speakers, it will not work with headphones, which usually share a common ground between the two channels. 

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