PAM8403 2 Channel * 3 Watt Audio Power Amplifier Module with Volume Control Pot

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)
• The 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

 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.

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P/N EM-AUDIO-0002