Function:
1 Amplification uses MAX4466, an opp amp designed to perform this delicate task.
2. With excellent power noise reduction function, this amplifier sound is very good and there is no noise or scratches as the breakout of other microphone amplifiers we tried.
3 Gain is set from 25x to 125x, perfect for reading from microcontroller ADC. The output is rail-to-rail so when the sound gets loud, the output may be up to 5Vpp.
4 For best performance, use the "quiet" power available Audio waveform comes out of the OUT pin. The DC bias of the output is VCC/2, so when fully quiet the voltage will be stable VCC/2 volts (DC joined). If your audio device requires AC bonded audio, place a 100uF capacitor between the output pin and the input of the device. If you connect to an audio amplifier with differential inputs or with decoupling capacitors, you dont need a cap of 100uF.
5 Easy to use. Connect GND to the ground and connect VCC to 2.4-5VDC
Specifications:
Item Type: Microphone Amplifier Module
Power supply voltage: + 2.4V ~ + 5.5V (STM / Raspberry P
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