{"product_id":"adafruit-mono-25w-class-d-audio-amplifier-pam8302","title":"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 to 5.5VDC. Since the amp is a class D, it is 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!\u003cbr\u003e\u003cbr\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\" - which means the output pins connect directly to the speaker pins, with 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 to another amplifier, it should drive the speakers directly.\u003c\/p\u003e\n\u003cp\u003eComes with a fully assembled and tested breakout board. We also include a header to plug it into a breadboard and a 3.5mm screw-terminal block so you can easily attach\/detach your speaker. You will be ready to rock in 15 minutes! \u003cstrong\u003eThe speaker 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 pull-up 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\u003eSpecifications\u003c\/h2\u003e\n\u003ch3\u003eDimensions (without 0.1\" header)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e15mm x 24mm x 2mm\u003c\/li\u003e\n\u003cli\u003eWeight: 1.4g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cdiv class=\"panel-collapse collapse in\" id=\"tab-technical-details-content\"\u003e\n\u003cdiv class=\"row\"\u003e\n\u003cdiv class=\"col-lg-12 col-md-12 col-sm-12 col-xs-12\"\u003e\n\u003cul\u003e\n\u003cli\u003ePAM8302A datasheet\u003c\/li\u003e\n\u003cli\u003ePrimary Guide\u003c\/li\u003e\n\u003cli\u003eEagleCAD PCB files on GitHub\u003c\/li\u003e\n\u003cli\u003eFritzing object available in Adafruit Fritzing library\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cul id=\"product-files\"\u003e\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":44930778792025,"sku":"kzc1789672942842","price":3.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0736\/5289\/5833\/files\/adafruit-mono-25w-class-d-audio-amplifier---pam8302_1.jpg?v=1789672948","url":"https:\/\/gymflexfit.shop\/products\/adafruit-mono-25w-class-d-audio-amplifier-pam8302","provider":"My Store","version":"1.0","type":"link"}