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MAX9814 High Performance Microphone

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₦ 6,300.00

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MAX9814 High Performance Microphone
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MAX9814 High Performance Microphone

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₦ 6,300.00 6300.0 NGN ₦ 6,300.00

₦ 6,300.00

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The MAX9814 Microphone Amplifier Module is a compact, high-performance audio solution designed for clear voice capture and consistent audio levels in noisy environments. Featuring Automatic Gain Control (AGC), this module adjusts microphone sensitivity in real time, maintaining stable volume output without manual tuning.

Key Features:

  • Automatic Gain Control (AGC): Maintains consistent output volume

  • Programmable Gain and AGC Timing: Customize response to noise and dynamics

  • Low Noise Microphone Bias (2V): Optimized for electret microphones

  • Analog Output: Compatible with ADCs on 3.3V systems

  • Low Power Shutdown Mode: Ideal for portable or battery-powered designs

  • Wide Audio Frequency Response: From 20Hz up to 20kHz

Specifications:

  • IC: MAX9814

  • Supply Voltage: 2.7V – 5.5V

  • Current Draw: ~3mA

  • Output Signal: 2Vpp (peak-to-peak) on 1.25V DC bias

  • Fixed Front-End Gain: 12dB

  • Selectable Output Gain: 8dB / 18dB / 28dB

  • Overall Gain Options: 40dB / 50dB / 60dB

  • Frequency Response: 20Hz – 20kHz

  • Noise Density: 30nV/√Hz

  • Total Harmonic Distortion (THD): 0.04% (typical)

  • AGC Hold Time: 30ms

  • AGC Threshold & Timing: Programmable via external components

  • AGC Attack/Release Ratio: 1:4000 (default), 1:2000, 1:500

Applications:

  • Speech recognition and voice control systems

  • Bluetooth headsets and wearable audio devices

  • High-quality portable recorders

  • IP phones and teleconferencing equipment

  • Smart home assistants and IoT audio input modules