{"id":8861031560,"title":"Adafruit Audio IC Development Tools Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302","handle":"adafruit-audio-ic-development-tools-adafruit-mono-2-5w-class-d-audio-amplifier-pam8302","description":"\u003cp\u003eThis 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. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003eThe 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.\u003c\/span\u003e\u003c\/p\u003e","published_at":"2017-03-07T22:16:00-05:00","created_at":"2017-03-06T21:01:29-05:00","vendor":"kjdElectronics","type":"Adafruit","tags":["Breakout Boards","Sound"],"price":390,"price_min":390,"price_max":390,"available":true,"price_varies":false,"compare_at_price":395,"compare_at_price_min":395,"compare_at_price_max":395,"compare_at_price_varies":false,"variants":[{"id":31547912264,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"79T-SM0-GWZ","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Adafruit Audio IC Development Tools Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302","public_title":null,"options":["Default Title"],"price":390,"weight":0,"compare_at_price":395,"inventory_quantity":39,"inventory_management":"shopify","inventory_policy":"deny","barcode":"2130"}],"images":["\/\/cdn.shopify.com\/s\/files\/1\/1749\/9663\/products\/2130-01.jpg?v=1488904284","\/\/cdn.shopify.com\/s\/files\/1\/1749\/9663\/products\/2130-04.jpg?v=1488904287","\/\/cdn.shopify.com\/s\/files\/1\/1749\/9663\/products\/2130-00.jpg?v=1488904288","\/\/cdn.shopify.com\/s\/files\/1\/1749\/9663\/products\/2130-03.jpg?v=1488904291"],"featured_image":"\/\/cdn.shopify.com\/s\/files\/1\/1749\/9663\/products\/2130-01.jpg?v=1488904284","options":["Title"],"content":"\u003cp\u003eThis 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. \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cspan\u003eThe 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.\u003c\/span\u003e\u003c\/p\u003e"}

Adafruit Audio IC Development Tools Adafruit Mono 2.5W Class D Audio Amplifier - PAM8302

Product 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. 


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.

$3.90 $3.95
Maximum quantity available reached.
  • Fully assembled and tested breakout board.
  • Header to plug it into a breadboard
  • 3.5mm screw-terminal blocks 
  • Output Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply
  • 50dB PSRR at 1KHz
  • Low current draw: 4mA quiescent and 1uA in shutdown mode

Dimensions (without 0.1" header):

  • 15mm x 24mm x 2mm / 0.6" x 0.9" x 0.08"
  • Weight: 1.4g