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Hot selling GY-MAX9814 microphone amplifier module MIC microphone sound amplification/microphone head sensor module
GY-MAX9814 microphone amplifier module MIC microphone sound amplification/microphone head sensor module
Product Descriptions
GY-MAX9814 is a low-cost high-performance microphone amplifier with automatic gain control (AGC) and low noise microphone bias. The
device features a low-noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator, and AGC
control circuit
Product Parameters
Automatic Gain Control (AGC)
3 gain settings (40dB, 50dB, 60dB)
Programmable action time
Programmable action to release time ratio
Power supply voltage range 2.7V~5.5V
Low THD: 0.04% (typical value)
Low power shutdown mode
Built in 2V low noise microphone bias
Product Pin Description
VCC: Power supply positive
GND: Ground
GAIN: Tri state amplifier gain control:
GAIN=VDD, set gain to 40dB
GAIN=GND, set gain to 50dB
GAIN=airborne, gain set to 60dB
OUT: amplifier output
AR: Three state start and release ratio selection, controlling the start time and release time ratio of the AGC circuit:
A/R=GND: Start/release ratio is 1:500
A/R=VDD: Start/release ratio is 1:2000
A/R=airborne: start/release ratio of 1:4000
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