MAX9814 high-performance microphone AGC amplifier module CMA-4544PF-W

MAX9814 high-performance microphone AGC amplifier module CMA-4544PF-W

The MAX9814 is a low-cost, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The device has a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit

Specifications:

• Supply Voltage: 2.7v-5.5v @ 3mA current
• Output: 2Vpp on 1.25V bias
Frequency Response: 20Hz-20 KHz
Programmable Attack and Release Ratio
Automatic gain, selectable max from 40dB, 50dB or 60dB
Low Input-Referred Noise Density of 30nV

• Low THD: 0.04% (typ)

3 gain settings (40dB, 50dB, 60dB)

Programmable action time

Programmable action and release time ratio

2.7V to 5.5V supply voltage range

Low input noise density 30nV/

Low THD: 0.04% (typical value)

Low power shutdown mode

Built-in 2V low noise microphone bias

Provides a space-saving 14-pin TDFN (3mm x 3mm) package

-40°C to +85°C extended temperature range