Audio IC Development Tools Adafruit Mono 2.5W Class D Audio ... - 2024 report by Whydis
Audio IC Development Tools Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302 (1 piece)
This super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers. Inside the miniature chip is a class D controller, able to run from 2.0V-5.5VDC. Since the amp is a class D, its very efficien...
It has built in thermal and over-current protection but we could barely tell it got hot
There's even a volume trim pot so you can adjust the volume on the board down from the default 24dB gain
This board is a welcome upgrade to basic "LM386" amps! The A+ and A- inputs of the amplifier go through 1.0uF capacitors, so they are fully 'differential' - if you don't have differential outputs, simply tie the Audio- pin to ground
The output is "Bridge Tied" - that means the output pins connect directly to the speaker pins, no connection to ground
The output is a high frequency 250KHz square wave PWM that is then 'averaged out' by the speaker coil - the high frequencies are not heard
All the above means that you can't connect the output into another amplifier, it should drive the speakers directly
Comes with a fully assembled and tested breakout board
We also include header to plug it into a breadboard and a 3.5mm screw-terminal blocks so you can easily attach/detach your speaker