{"product_id":"max9814-mic-amp-module-with-agc-for-arduino-projects","title":"MAX9814 Mic Amp Module with AGC for Arduino Projects","description":"\u003ch1\u003eMAX9814 Electret Microphone Amplifier Module with AGC\u003c\/h1\u003e\u003cp\u003eThe MAX9814 is a low-noise microphone amplifier with automatic gain control (AGC), tailored for electret microphones. It amplifies weak audio signals and adjusts gain dynamically to prevent clipping, making it ideal for audio capture in Arduino, ESP32, and Raspberry Pi projects. Use it to add voice input, sound detection, or audio recording to your electronics builds.\u003c\/p\u003e\u003ch2\u003eKey Specifications\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V to 5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGain Options\u003c\/td\u003e\n\u003ctd\u003e40dB, 50dB, 60dB (pin-selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAGC Attack Time\u003c\/td\u003e\n\u003ctd\u003e0.4 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAGC Release Time\u003c\/td\u003e\n\u003ctd\u003e500 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e20 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Swing\u003c\/td\u003e\n\u003ctd\u003eRail-to-Rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eWhat You Can Build With This\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eVoice-activated LED strip that responds to claps or spoken commands\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kit-sound-reactive-flame-leds\"\u003eSound-reactive music visualizer with WS2812 LEDs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/clap-switch-kit-with-arduino-uno-learn-pattern-detection-and-debounce\"\u003eClap switch using an Arduino to toggle appliances\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eAnimal sound recorder with timestamp logging on an SD card\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility\u003c\/h2\u003e\u003cp\u003eThis module works seamlessly with any microcontroller having an analog input, such as Arduino Uno, ESP32, Raspberry Pi Pico, and STM32. It accepts standard electret microphone capsules with built-in bias circuitry, so no external components are needed. Operates on both 3.3V and 5V logic systems.\u003c\/p\u003e\u003ch2\u003eWiring Notes\u003c\/h2\u003e\u003cp\u003eConnect VCC to 3.3V or 5V, GND to ground, and OUT to an analog pin. The GAIN pin can be left floating (60dB), tied to GND (50dB), or tied to VCC (40dB). Keep connections short to minimize noise; avoid running signal wires near high-current traces.\u003c\/p\u003e\u003ch2\u003eWhy Buy from Compoden\u003c\/h2\u003e\u003cp\u003eEvery component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.\u003c\/p\u003e\u003cdetails\u003e\u003csummary\u003eIs this compatible with Arduino?\u003c\/summary\u003e\u003cp\u003eYes, connect the OUT pin to any analog input (e.g., A0 on Arduino Uno) and read with analogRead(). Use the onboard GAIN pin to set sensitivity.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow do I adjust the gain?\u003c\/summary\u003e\u003cp\u003eThe module has three fixed gain settings selected by the GAIN pin: leave it unconnected for 60dB, connect to GND for 50dB, or connect to VCC for 40dB.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDoes it work with a standard 3.5mm electret mic?\u003c\/summary\u003e\u003cp\u003eYes, it is designed for common electret condenser microphone capsules, including those in 3.5mm form factors. It provides the required bias voltage internally.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdiv class=\"compoden-handoff\" style=\"margin-top:24px;padding:16px;background:#f0f4ff;border-left:4px solid #2B4D8F;border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 6px 0;font-weight:600;color:#1A3560;\"\u003e📦 Free Setup Handoff Document Included\u003c\/p\u003e\n  \u003cp style=\"margin:0;font-size:0.95em;color:#333;\"\u003eEvery Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.\u003c\/p\u003e\n\u003c\/div\u003e\n","brand":"Compoden","offers":[{"title":"Default Title","offer_id":53445064163693,"sku":"CDN-0892","price":240.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0999\/3997\/5533\/files\/image_1_21791d59-7618-4757-81ea-a882db4ca9c0.jpg?v=1781513122","url":"https:\/\/compoden.com\/products\/max9814-mic-amp-module-with-agc-for-arduino-projects","provider":"Compoden","version":"1.0","type":"link"}