0 Items Sign In
SHOP BLOG LEARN FORUMS VIDEOS
BREAKOUT BOARDS / AMPLIFIERS/SOUND / ADAFRUIT MONO 2.5W CLASS D AUDIO AMPLIFIER - PAM8302
DESCRIPTION
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 efficient (over 90% efficient when driving an
8Ω speaker at over half a Watt) - making it perfect for portable and battery-powered projects. 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!
1
ADD TO CART
Adafruit Mono 2.5W
Class D Audio
Amplifier - PAM8302
PRODUCT ID: 2130
IN STOCK
1-9
10-99
100+
ADD TO WISHLIST
DESCRIPTION
TECHNICAL DETAILS
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
PiGlass
Build a Raspberry Pi based
wearable computer
Ray Gun Blaster
Make a prop replica with
sound FX and NeoPixel
LEDs!
CircuitPython Sound Box
Press the button to play
sound!
Wizzy: A Needle Felted Cat
Create animatronic animals
with attitude.
Cup o' Sound
Cafe White Noise Machine
Pocket PiGRRL
Retropie in your pocket!
Mini Raspberry Pi Handheld
Notebook
Build a tiny handheld
MAY WE ALSO SUGGEST...
raspberry pi portable
computer
5" Display Kippah Portable
Raspberry Pi
Make a portable Raspberry Pi
Talking d20 20-Sided
Gaming Die
“Greetings, adventurer!”
10" Raspberry Pi Desktop
Slim and portable!
Phone-Activated Talking Dog
Collar
"I can smell you!"
PiGRRL 2
Make a portable Raspberry Pi
2 game console
Raspberry Pi Pipboy 3000
Explore the apocalypse with
a trusty Pi
Happy Chewbacca Mask
Chewbacca is a lovable
Wookie with a distinctive
voice, but here's how to give
him a voice transplant and
add your own fun sounds to
this talking mask
Circuit Playground Sound-
Controlled Robot
Make your Circuit Playground
mobile and change direction
via sound
Fix-It Felix Jr. Hammer with
Sound FX
I can make it!
Magic Wand
A Magic Wand responds to
movement to cast spells
Raspberry Pi Selfie Bot
Build a selfie camera with a
quirky personality!
Adafruit Audio FX Sound
Board - WAV/OGG Trigger
Adafruit I2S Stereo Decoder
- UDA1334A Breakout
Amplifier Breakout -
Adafruit Audio FX Sound
Board - WAV/OGG Trigger
Mono Enclosed Speaker -
3W 4 Ohm
Sound Board - WAV/OGG
Adafruit PDM MEMS
Microphone Breakout
Adafruit Audio FX Mini
Sound Board - WAV/OGG
EXPAND TO SEE DISTRIBUTORS
DISTRIBUTORS
CONTACT
SUPPORT
DISTRIBUTORS
EDUCATORS
JOBS
FAQ
SHIPPING & RETURNS
TERMS OF SERVICE
PRIVACY & LEGAL
ABOUT US
ENGINEERED IN NYC Adafruit ®
"Perfect is the enemy of good" -
Voltaire
4.94.9