Description:
The MAX9814 Amplifier Module is a low-cost, high-performance microphone amplifier with automatic gain control (AGC) and low-noise microphone bias. The MAX9814 Amplifier Module has a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit An external resistive divider controls the AGC threshold and a single capacitor programs the attack/release times. A tri-level 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 electric microphones.
Specifications:
- Supply Voltage: 2.7v - 5.5v @ 3mA current
- Output: 2Vpp on 1.25V bias
- Frequency Response: 20Hz – 20 KHz
- Low Input-Referred Noise Density of 30nV
- Low THD: 0.04% (typical)
Features:
- Automatic Gain Control (AGC).
- Programmable action time.
- Programmable action and release time ratio.
- Low-power shutdown mode.
- MAX9814 Amplifier Module has built-in 2 Volt low noise microphone bias.
Applications:
- High-Quality Portable Recorders
- IP Phones/Telephone Conferencing
- Bluetooth Headsets
- Two-Way Communicators
Package Included:
1 x MAX9814 Amplifier Module MAX9814 High Performance Microphone AGC Amplifier Module
