Top 10 Rated adafruit audio amplifier in 2021 Comparison Table
- 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!
- 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.
- 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: 2.1W at 4Ω, 10% THD, 1.4W at 8Ω, 10% THD, with 5V Supply
- PSRR: 77 dB typ @ 217 Hz with 6 dB gain
- Designed for use without an output filter, when wires are kept at under 2"-4" long
- Four pin-selectable gains: 6dB, 12dB, 18dB and 24dB. Select with the onboard switches or by setting the G0 and G1 breakout pins
- Low current draw: typ 6mA quiescent and 1.5uA in shutdown mode
- Power From 4.5V-14V Dc Voltage
- Up To 93% Efficient (88-93% Typical)
- 20Ma Quiescent Current (Or Put Into Shutdown For 1Ua Quiescent)
- Up To 29.5Db Max Gain
- Use Dc Or Ac Coupled Line-Level Input, Up To 3Vpp.Filterless Spread-Spectrum Modulation Lowers.20W Stereo Output (4&Amp;Omega;, Vdd 12V, Thd+N 10%).Low 0.04% Thd+N.Integrated Click-And-Pop Suppression.Short-Circuit And Thermal-Overload Protection
- Spread-Spectrum Modulation and Active Emissions Limiting
- Excellent click-and-pop suppression
- Thermal and short-circuit/over-current protection
- Passes EMI limit unfiltered with up to 12 inches (30 cm) of speaker cable
- PAM8302 2.5W Class D Single Channel Solo Audio Amplifier Board
- Audio Amplifier Board Amp Module
- Output Power: 2.5W at 4¦¸, 10% THD
- 5.5V Supply 50dB PSRR at 1KHz
- Output Power:1.5W at 8¦¸, 10% THD
- ets you add a lovely color display in a sturdy and reliable fashion
- This PCB looks just like a round TFT breakout but has permanently affixed M3 standoffs that act as mechanical and electrical connections.
- Once attached you'll get a 1.54" 240x240 IPS display with backlight control,
- two 3-pin STEMMA connectors for attaching NeoPixel strips or servos, and a Class D audio amplifier with a Molex PicoBlade connector that can plug one of our lil speakers.
- 53.3mm x 53.3mm x 9.4mm / 2.1" x 2.1" x 0.4"
- Designed for people who wanted to make props, costumes, toys, and other small portable projects.
- Completely stand-alone, just needs a 3 to 5.5VDC battery. No microcontroller required!
- Built in Mass Storage USB with 16 MB storage. Drag and drop your files right on it.
- High Quality Sound - decoding hardware handles any bit/sample rate and mono or stereo
- Comes assembled and tested
- Uses the 5V input via Micro-B USB connector on the Pro Trinket
- For charging single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)
- 100mA charge current, adjustable to 500mA by soldering a jumper closed
- Batteries and Pro Trinket not included.
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Our Best Choice: Adafruit Circuit Playground Express Developer Edition – Base Kit
Circuit Playground Categorical – Developer Version
USB cable – A/MicroB – 3ft
3 x Alkaline AAA batteries
3 x AAA Battery Holder with On/Off Change, JST, and Belt Clip
Mini Storage Box
This is some of the fantastic goodies baked in to just about every Circuit Playground:
10 x mini NeoPixels, just about every one particular can screen any coloration
1 x Movement sensor (LIS3DH triple-axis accelerometer with faucet detection, free-tumble detection)
1 x Temperature sensor (thermistor)
1 x Gentle sensor (phototransistor). Can also act as a colour sensor and pulse sensor.
1 x Audio sensor (MEMS microphone)
1 x Mini speaker with course D amplifier (7.5mm magnetic speaker/buzzer)
2 x Drive buttons, labeled A and B
1 x Slide swap
Infrared receiver and transmitter – can receive and transmit any remote manage codes, as properly as send messages among Circuit Playground Expresses. Can also act as a proximity sensor.
8 x alligator-clip helpful input/output pins
Contains I2C, UART, 8 pins that can do analog inputs, multiple PWM output
7 pads can act as capacitive contact inputs and the 1 remaining is a true analog output
Inexperienced “ON” LED so you know its powered
Purple “#13” LED for primary blinking
ATSAMD21 ARM Cortex M0 Processor, running at 3.3V and 48MHz
2 MB of SPI Flash storage, utilised principally with CircuitPython to store code and libraries.
MicroUSB port for programming and debugging
USB port can act like serial port, keyboard, mouse, joystick or MIDI!