Pam8403 Bluetooth Speaker Dual Channel Class D Audio Amplifier Module

Pam8403 Bluetooth Speaker Dual Channel 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 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%
Can provide 3W (left channel) + 3W (right channel) output power into a 4O 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
Module has short-circuit current protection, under-voltage lockout and over-temperature protection (shuts down at an internal temperature of 140C +/- 15C)