{"product_id":"m5stack-pdm-mems-microphone-unit-spm1423","title":"M5Stack PDM MEMS Microphone Unit","description":"\u003cp\u003e\u003cstrong\u003eThe M5Stack Mini PDM Unit is a compact digital MEMS microphone module with PDM output, offering high sensitivity, low power consumption, and strong RF interference resistance for audio capture in wearable and smart device applications.\u003c\/strong\u003e\u003c\/p\u003e \u003chr\u003e \u003cp\u003eThe \u003ca href=\"\/collections\/m5stack\" title=\"M5Stack Products\"\u003eM5Stack\u003c\/a\u003e \u003cstrong\u003eMini PDM Unit\u003c\/strong\u003e is a \u003cstrong\u003edigital MEMS silicon microphone\u003c\/strong\u003e based on \u003cstrong\u003ePDM\u003c\/strong\u003e (Pulse Density Modulation) signals.\u003c\/p\u003e \u003cp\u003eIt \u003cstrong\u003efeatures\u003c\/strong\u003e high signal-to-noise ratio, high sensitivity, low power consumption, strong RF interference immunity, and smooth frequency response.\u003c\/p\u003e \u003cp\u003eThe microphone automatically switches states (\u003cstrong\u003epower-off\/active\/sleep\u003c\/strong\u003e) according to the clock frequency, making it suitable for audio data acquisition in \u003ca href=\"\/collections\/adafruit-wearables\" title=\"Wearables\"\u003ewearable\u003c\/a\u003e devices and smart digital devices.\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003ePDM signal output (CLK\/DAT)\u003c\/li\u003e \u003cli\u003eHigh sensitivity and high signal-to-noise ratio\u003c\/li\u003e \u003cli\u003eLow power consumption\u003c\/li\u003e \u003cli\u003eStrong RF interference immunity\u003c\/li\u003e \u003cli\u003eLEGO-compatible\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eDigital Mic\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eSPM1423\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e94dB SPL@1KHz Typical: -22dBFS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSNR\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e94dB SPL@1KHz, A-weighted Typical: 61.4dB\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eTHD\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e100dB SPL@1KHz Typical: 1%\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eOperating Current\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e600µA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eEnclosure Material\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003ePlastic (PC)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eProduct Size\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e24.0 x 24.0 x 13.0mm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eProduct Weight\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4.0g\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/docs.m5stack.com\/en\/products\/sku\/U089\" target=\"_blank\" rel=\"noopener\" title=\"Product documentation\"\u003eProduct documentation\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePackage Contents\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1x M5Stack PDM MEMS Microphone Unit (SPM1423)\u003c\/li\u003e \u003cli\u003e1x HY2.0-4P Grove Cable (5cm)\u003c\/li\u003e \u003c\/ul\u003e","brand":"M5Stack","offers":[{"title":"Default Title","offer_id":55738939736449,"sku":"U089","price":3.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/m5stack-pdm-mems-microphone-unit-spm1423-m5stack-u089-1240859691.jpg?v=1780052535","url":"https:\/\/thepihut.com\/products\/m5stack-pdm-mems-microphone-unit-spm1423","provider":"The Pi Hut","version":"1.0","type":"link"}