Fasizi 2pcs MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino

• The MAX9814 is a high-quality microphone amplifier with automatic gain control (AGC) and low-noise microphone bias.
• The device features a low-noise preamplifier, variable gain amplifier (VGA), output amplifier, microphone-bias-voltage generator and AGC control circuitry.
• The low-noise preamplifier has a fixed 12dB gain, while the VGA gain automatically adjusts from 20dB to 0dB, depending on the output voltage and the AGC threshold.
• A trilevel digital input programs the output amplifier gain. An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times.
• A trilevel digital input programs the ratio of attack-to-release time. The hold time of the AGC is fixed at 30ms. The low-noise microphone-bias-voltage generator can bias most electret microphones.

Description: Automatic Gain Control (AGC). Three Gain Settings (40dB, 50dB, 60dB). Programmable Attack Time. Programmable Attack and Release Ratio. 2.7V to 5.5V Supply Voltage Range. Low Input-Referred Noise Density of 30nV/. Low THD: 0.04% (typ). Low-Power Shutdown Mode. Internal Low-Noise Microphone Bias, 2V. Available in the Space-Saving, 14-Pin TDFN (3mm x 3mm) Package. -40°C to +85°C Extended Temperature Range. Size：26*14*8mm(L*W*H). Weight:2.0g. Applications/Uses： Bluetooth Headsets、Digital Still Cameras、Digital Video Cameras、Entertainment Systems (e.g. Karaoke)、High-Quality Portable Recorders.IP Phones/Telephone Conferencing、PDAs、Two-Way Communicators . Pack include: 2 x Fasizi MAX9814 Electret MIC Microphone Amplifier Module Auto Gain Control for Arduino