{"product_id":"max9814-electret-microphone-amplifier-module-agc","title":"MAX9814 Electret Microphone Amplifier Module | AGC Auto Gain Control","description":"\u003ch2 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eStop Audio Clipping with Automatic Gain Control (AGC)\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eStandard microphone modules often struggle with dynamic audio environments—whispers are too quiet to detect, while loud claps cause severe distortion and clipping. The\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eMAX9814 Microphone Amplifier\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003eeliminates this problem using advanced\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eAutomatic Gain Control (AGC)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e. This built-in hardware feature dynamically adjusts the amplifier's gain in real-time. It automatically turns down the volume when sounds get too loud and boosts the sensitivity when sounds are quiet, ensuring your microcontroller receives a smooth, consistent analog waveform.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eSelectable Gain for Any Environment\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eNot every project requires the same level of sensitivity. The MAX9814 module features a dedicated \"Gain\" pin that allows you to easily configure the maximum amplification level. You can set it to\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e40dB, 50dB, or 60dB\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e\u003cspan\u003e \u003c\/span\u003edepending on your application. Whether you are building a sensitive sleep-talking recorder or a loud karaoke entertainment system, this module adapts perfectly to your acoustic environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eUltra-Low Noise \u0026amp; High-Fidelity Output\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eDesigned for high-quality audio applications, this module boasts an incredibly low\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003eTotal Harmonic Distortion (THD) of just 0.04%\u003c\/span\u003e\u003c\/strong\u003e\u003cspan class=\"ng-star-inserted\"\u003e. It includes an internal low-noise 2V microphone bias, ensuring that the analog signal sent to your Arduino's ADC (Analog-to-Digital Converter) is clean and free from static interference. The output is a 2Vpp max signal with a 1.25V DC offset, making it incredibly easy to read with standard 3.3V or 5V microcontrollers.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e💡 Pro Tip from Our Technicians\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp class=\"ng-star-inserted\"\u003e\u003cspan class=\"ng-star-inserted\"\u003e\"Wiring the Gain pin on the MAX9814 is incredibly simple but often overlooked by beginners! As printed on the back of the PCB: if you leave the Gain pin\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003efloating (unconnected)\u003c\/strong\u003e, the module defaults to a highly sensitive\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e60dB\u003c\/strong\u003e. If you connect the Gain pin to\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003eGND\u003c\/strong\u003e, it drops to\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e50dB\u003c\/strong\u003e. Connecting it to\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003eVDD\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003esets it to\u003cspan\u003e \u003c\/span\u003e\u003cstrong class=\"ng-star-inserted\"\u003e40dB.\u003c\/strong\u003e\"\u003c\/span\u003e\u003c\/p\u003e","brand":"Sun Cheong Computer Company Limited","offers":[{"title":"Default Title","offer_id":47914137682071,"sku":null,"price":106.0,"currency_code":"TWD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0440\/4022\/4919\/files\/max9814-electret-microphone-agc-amplifier-module-front.jpg?v=1781344256","url":"https:\/\/scccltd.com\/en-tw\/products\/max9814-electret-microphone-amplifier-module-agc","provider":"Sun Cheong Computer Company Limited","version":"1.0","type":"link"}