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Voice Module

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MAX9812 MIC electret microphone amplifier voice module

Overview
● LC MAX9812 Microphone amplifier module carry MAX9812LEXT + T professional microphone amplifier chip, the chip with A built-in low noise microphone bias, having the advantages of low noise, high sensitivity, small volume, at the same time, the power supply current is only 230μA, integral shutoff mode power supply current and bias current can be combined to 100 nA.


The function and characteristics
● An extremely low THD + N (0.015%)
● A built-in low noise microphone bias
● 20 dB fixed gain
● With 100 dB  power supply rejection ratio
● Module power supply voltage: 2.7 V to 3.6 V


Introduced the hardware and instructions
● Size: 11 * 20 mm
● The board function description:
VCC, GND: 2.7 V to 3.6 V power input;
OUT: MIC signal output.