DORHEA 6 Pcs Electret Microphone Amplifier MAX4466 Module MAX4466 Microphone Preamplifier Gain Blue Adjustable Breakout Board

About this item

• •MAX4466 electret microphone amplifier 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 rejection ratio: 126dB; AVOL: 125dB (RL = 100 thousands of ohm meter) rail-to-rail output;
• •Quiescent power supply current: less than 24 microamp; Gain bandwidth: 600kHz
• •Using it is simple:
• •Connect GND to ground, VCC to 2.4-5VDC.
• •For the best performance, use the ""quietest"" supply available (on an for Arduino, this would be the 3.3V supply).
• •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.
• •The output pin is not designed to drive speakers or anything but the smallest in-ear headphones- you'll need an audio amplifier (such as 3.7W stereo amp) 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.
• •for audio-reactive projects, we suggest using an FFT driver library which can take the audio input and 'translate' it into frequencies.
• •Package include:
• •6 x Electret microphone amplifier adjustable mAX4466 module

Specifications