{"product_id":"adafruit-silicon-mems-microphone-breakout-spw2430","title":"Adafruit Silicon MEMS Microphone Breakout - SPW2430","description":"\u003cp\u003eListen to this good news - we now have a breakout board for a super tiny MEMS microphone!\u003c\/p\u003e\n\u003cp\u003eJust like 'classic' electret microphones, MEMS mics can detect sound and convert it to voltage, but they don't need a bias resistor or amplifier, its all in one! The SPW2430 is a small, low cost MEMS mic with a range of 100Hz - 10KHz, good for just about all general audio recording\/detection.\u003cbr\u003e\u003cbr\u003eThis breakout is best used for projects such as voice changers, audio recording\/sampling, and audio-reactive projects that use FFT. To keep the breakout small and simple, we only added a 3V voltage regulator (the microphone requires 3.3V DC) and filter capacitors. No additional opamp is included, the output peak-to-peak voltage has a 0.67V DC bias and about 100mVpp (peak-to-peak) when talking near the microphone, which is good for attaching to something that expects 'line level' input without clipping. The peak-to-peak can be as high as 1Vpp if there's a very loud sound. If you are If you need a \u003ca href=\"https:\/\/shop.pimoroni.com\/products\/adafruit-electret-microphone-amplifier\" target=\"_blank\"\u003emicrophone with adjustable gain\u003c\/a\u003e or \u003ca href=\"https:\/\/shop.pimoroni.com\/products\/adafruit-electret-microphone-amplifier-max9814-w-auto-gain-control\" target=\"_blank\"\u003eauto-gain control\u003c\/a\u003e, check out our mic+amplifier options. If you need a higher peak-to-peak, a rail-to-rail op-amp and \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Operational_amplifier_applications#Non-inverting_amplifier\" target=\"_blank\"\u003esome resistors can get you boosted up\u003c\/a\u003e!\u003c\/p\u003e\n\u003cp\u003eUsing it is simple: connect GND to ground, Vin to 3.3-5VDC. For the best performance, use the \"quietest\" supply available (on an Arduino, this would be the 3.3V supply). The audio waveform will come out of the \u003cstrong\u003eDC\u003c\/strong\u003e pin. The output will have a DC bias of 0.67V so when its perfectly quiet that's what you'll read, there's a little drift. If the audio equipment you're using requires AC coupled audio, you can grab the signal out of the \u003cstrong\u003eAC\u003c\/strong\u003e pin, which has a 10uF capacitor in series.\u003cbr\u003e\u003cbr\u003eThe output pin is not designed to drive speakers or anything but the smallest in-ear headphones - you'll need \u003ca href=\"https:\/\/shop.pimoroni.com\/products\/adafruit-stereo-3-7w-class-d-audio-amplifier\" target=\"_blank\"\u003ean audio amplifier (such as our 3.7W stereo amp) if you want to connect the amp directly to speakers\u003c\/a\u003e. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the \u003cstrong\u003eDC\u003c\/strong\u003e pin directly to the microcontroller ADC pin.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 0.9g\u003c\/li\u003e\n\u003cli\u003eProduct Dimensions: 15.8mm x 14.1mm x 2.9mm \/ 0.6\" x 0.6\" x 0.1\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":7461583617,"sku":"ADA2716","price":5.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/2716.jpg?v=1445266649","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/adafruit-silicon-mems-microphone-breakout-spw2430","provider":"Pimoroni Ltd","version":"1.0","type":"link"}