MAX9814 Datasheet PDF - Maxim Integrated

●General Description

●The MAX9814 is a low-cost, 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.

●Features

●♦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/√Hz

●♦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

●Applications

●Digital Still Cameras

●Digital Video Cameras PDAs

●Bluetooth Headsets

●Entertainment Systems (e.g., Karaoke)

●Two-Way Communicators

●High-Quality Portable Recorders

●IP Phones/Telephone Conferencing