8 Pcs MAX4466 Electret Microphone Amplifier Adjustable Module Microphone Preamplifier Blue Breakout Board

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  • MAX4466 module power supply voltage +2.4V to +5.5V (can be compatible with STM, Raspberry Pi and other development board motherboards); Power supply rejection ratio 112dB; Common mode
  • MAX4466 tested board comes with a 20-20KHz electret microphone soldered, on the back, there is a small trimmer pot to adjust the gain; You can set the gain from 25x to 125x
  • Easy to use Connect GND to ground, VCC to 2.4-5VDC, for the best performance, use the "quietest" supply available (this would be the 3.3V supply).
  • If you want to connect the amp directly to speakers. If you're connecting to a microcontroller pin, you don't need an amplifier or decoupling capacitor - connect the OUT pin directly to the microcontroller ADC pin.
  • The audio waveform will come out of the OUT pin. The output will have a DC bias of VCC 2 so when its perfectly quiet, the voltage will be a steady VCC 2 volts (it is DC coupled). If the audio equipment you're using requires AC coupled audio, place a 100uF capacitor between the output pin and the input of your device. If you're connecting to an audio amplifier that has differential inputs or includes decoupling capacitors, the 100uF cap is not required.

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