{"product_id":"adafruit-stemma-audio-amp-mono-2-5w-class-d-pam8302","title":"Adafruit STEMMA Audio Amp - Mono 2.5W Class D - PAM8302","description":"\u003cp\u003eThe\u003cstrong\u003e Adafruit STEMMA Audio Amp\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eis a super small mono amplifier is surprisingly powerful - able to deliver up to 2.5 Watts into 4-8 ohm impedance speakers.\u003c\/p\u003e\n\u003cp\u003eInside 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!\u003c\/p\u003e\n\u003cp\u003eThis board is a simplified version of our breadboard-friendly Adafruit Mono 2.5W Class D Audio Amplifier board. This version is designed to be 'plug and play' - with no soldering required. You can input the audio via the JST-PH 3 Pin connector - such as a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"\/en-eu\/products\/jst-to-breadboard-jumper-3-pin\" target=\"_blank\" rel=\"noopener noreferrer\"\u003epin header cable\u003c\/a\u003e. The trade-off is that this board doesn't have differential inputs, instead the audio inputs are referenced to the power\/signal ground wire.\u003c\/p\u003e\n\u003cp\u003eThe input to the amplifier goes through 1.0uF capacitors so you can have DC . 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.\u003cbr\u003e\u003cbr\u003eComes 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! \u003cstrong\u003eSpeaker is not included, use any 4 ohm or greater impedance speaker.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOutput Power: 2.5W at 4Ω, 10% THD, 1.5W at 8Ω, 10% THD, with 5.5V Supply\u003c\/li\u003e\n\u003cli\u003e50dB PSRR at 1KHz\u003c\/li\u003e\n\u003cli\u003eFilterless design, with ferrite bead + capacitors on output.\u003c\/li\u003e\n\u003cli\u003eFixed 24dB gain, onboard trim potentiometer for adjusting input volume.\u003c\/li\u003e\n\u003cli\u003eThermal and short-circuit\/over-current protection\u003c\/li\u003e\n\u003cli\u003eLow current draw: 4mA quiescent and 0.5mA in shutdown (due to pullup resistor on SD pin)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The terminal block included with your product may be blue or black.\u003c\/p\u003e\n\u003ch2\u003eTechnical Details\u003c\/h2\u003e\n\u003cimg src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2011_65_EU.svg\" alt=\"RoHS 2 2011 65 EU Compliant\" width=\"145\" height=\"80\"\u003e \u003cimg src=\"https:\/\/www.adafruit.com\/includes\/templates\/shop2019\/images\/RoHS2_2015_863_EU.svg\" alt=\"RoHS 2 2015 863 EU Compliant\" width=\"145\" height=\"80\"\u003e\n\u003ch2\u003eLearn\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.adafruit.com\/stemma-audio-amp\"\u003ePrimary Guide: Adafruit STEMMA Audio Amp\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":41033090596947,"sku":"ADA5647","price":4.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/files\/5647-00.jpg?v=1694779295","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-stemma-audio-amp-mono-2-5w-class-d-pam8302","provider":"Pimoroni Ltd","version":"1.0","type":"link"}