PAM8403 Mini 2 Channel 3W Stereo Audio Power Amplifier Board with Volume Control & Switch

This miniature PAM8403 3W Class D audio amplifier module 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)
• 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
• Net weight :8g

Note: Left and right channel "negative" connections should not be connected together, otherwise it may damage the module. Speakers (load) should be connected before power is applied to the module.

Package Contents:

• 1 x PAM8403 Class D Stereo Audio Power Amplifier Module with Volume Control
• Link to online specifications and usage instructions