{"product_id":"electret-microphone-amplifier-max4466-with-adjustable-gain","title":"Electret Microphone Amplifier - MAX4466 with Adjustable Gain","description":"\u003cp\u003eAdd an ear to your project with this well-designed electret microphone amplifier. This fully assembled and tested board comes with a 20-20KHz electret microphone soldered on. For amplification, it uses the Maxim MAX4466, an op-amp designed for this delicate task, featuring excellent power supply noise rejection for clear sound without scratchiness.\u003c\/p\u003e\u003cp\u003eThis breakout is ideal for voice changers, audio recording\/sampling, and audio-reactive projects using FFT. The gain is adjustable from 25x to 125x via a small trimmer pot on the back, allowing output from about 200mVpp to up to 1Vpp, suitable for microcontroller ADCs and line-level inputs. The output is rail-to-rail, going up to 5Vpp for loud sounds.\u003c\/p\u003e\u003cp\u003eUsage is simple: connect GND to ground, VCC to 2.4-5VDC (best performance at quietest supply like 3.3V on Arduino), and the audio waveform is output from the OUT pin. The output is DC biased at VCC\/2. For AC coupled audio input, use a 100uF capacitor between output and device input. Not designed to drive speakers directly; use an amplifier for that.\u003c\/p\u003e\u003cp\u003ePerfect for Arduino audio-reactive projects (using FFT libraries) and CircuitPython sound reactive projects. Example projects include voice changers and sound-reactive NeoPixel pendants.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIncludes 20Hz to 20kHz electret microphone\u003c\/li\u003e\n\u003cli\u003eAdjustable gain from 25x to 125x via trimmer pot\u003c\/li\u003e\n\u003cli\u003eUses Maxim MAX4466 low-noise op-amp\u003c\/li\u003e\n\u003cli\u003eOutput DC biased at half supply voltage\u003c\/li\u003e\n\u003cli\u003eSupply voltage: 2.4V to 5V DC\u003c\/li\u003e\n\u003cli\u003eOutput rail-to-rail up to 5Vpp\u003c\/li\u003e\n\u003cli\u003eIdeal for connection to microcontroller ADC inputs\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":56715814797689,"sku":"A1063","price":8.34,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1217\/2104\/files\/1063-06.jpg?v=1771832567","url":"https:\/\/shop.sb-components.co.uk\/products\/electret-microphone-amplifier-max4466-with-adjustable-gain","provider":"SB Components Ltd","version":"1.0","type":"link"}