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 Rang