{"product_id":"mems-microphone-pre-amplifier-with-compression-and-noise-gating-studio-quality-microphone-pre-amplifier","title":"MEMS Microphone Pre-Amplifier with Compression and Noise Gating – Studio Quality Microphone Pre-Amplifier","description":"\u003cp\u003eMEMS Microphones is setting a new performance benchmark across a growing number of industries. These innovative silicon microphones were designed to extend the benefits of the lowest possible self-noise (high SNR) and lowest distortion to an ever-expanding number of applications. The project presented here is a low noise analog \u003cstrong\u003eMEMS microphone Preamplifier\u003c\/strong\u003e with compression and noise gating. The project provides a studio-quality audio experience. The project is built using \u003cstrong\u003eSSM2167\u003c\/strong\u003e chip and \u003cstrong\u003eInvenSense ICS-40180\u003c\/strong\u003e Low-Noise Microphone with bottom port and analog output.\u003c\/p\u003e\n\u003cp\u003eThis is a complete microphone signal conditioning project. Designed primarily for voice-band applications, this project provides amplification, limiting, variable compression, and noise gate. User-adjustable compression ratio, noise gate threshold, and two different fixed gains optimize circuit operation for a variety of applications.\u003c\/p\u003e\n\u003cp\u003eThis is a complete and flexible solution for conditioning \u003cstrong\u003eMEMS microphones\u003c\/strong\u003e for personal electronics and computer audio systems. It is also excellent for improving vocal clarity in communications and the public address systems. A low noise voltage-controlled amplifier (VCA) provides a gain that is dynamically adjusted by a control loop to maintain a set compressions characteristic.  The compression ratio is set by a jumper and can be varied from \u003cstrong\u003e1:1\u003c\/strong\u003e to over \u003cstrong\u003e10:1\u003c\/strong\u003e relative to the fixed rotation point. Signals above the rotation point are limited to prevent overload and eliminate popping.\u003c\/p\u003e\n\u003cp\u003eA downward expander (noise gate) prevents the amplification of background noise or hum. This results in an optimized signal level prior to digitization, thereby eliminating the need for additional gain or attenuation in the digital domain. The flexibility of setting the compression ratio and the time constant of the level detector, coupled with two values of rotation point, make the \u003cstrong\u003eSSM2167\u003c\/strong\u003e easy to integrate into a wide variety of microphone conditioning applications.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Supply 3.3V DC\u003c\/li\u003e\n\u003cli\u003eOn-Board MEMS Microphone\u003c\/li\u003e\n\u003cli\u003eNoise Gate Adjustable Using Resistor R2\u003c\/li\u003e\n\u003cli\u003eVarious Compression Ratio Adjustable Using Resistor R4\u003c\/li\u003e\n\u003cli\u003eOn-Board Power LED\u003c\/li\u003e\n\u003cli\u003eExtended Frequency Response from 60 Hz to 20 kHz\u003c\/li\u003e\n\u003cli\u003ePeak to Peak Output Maximum 2V\u003c\/li\u003e\n\u003cli\u003ePCB Dimensions 32.23 x 12.86 mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"dotfry","offers":[{"title":"Default Title","offer_id":47247258255532,"sku":"A140","price":22.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/6436\/7532\/files\/A140A.jpg?v=1789813214","url":"https:\/\/dotfry.com\/products\/mems-microphone-pre-amplifier-with-compression-and-noise-gating-studio-quality-microphone-pre-amplifier","provider":"dotfry","version":"1.0","type":"link"}