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. You will be ready to rock in 15 minutes! Speaker is not included, use any 4 ohm or
greater impedance speaker.
Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply
50dB PSRR at 1KHz
Filterless design, with ferrite bead + capacitors on output.
Fixed 24dB gain, onboard trim potentiometer for adjusting input volume.
Thermal and short-circuit/over-current protection
Low current draw: 4mA quiescent and 1uA in shutdown mode
Note: The terminal block included with your product may be blue or black.
TECHNICAL DETAILS
LEARN
PAM8302A datasheet
EagleCAD PCB files on GitHub
Fritzing object available in Adafruit Fritzing library
Dimensions (without 0.1" header):
15mm x 24mm x 2mm / 0.6" x 0.9" x 0.08"
Weight: 1.4g