Add your ears to this project designed electret microphone amplifier This assembled and
Test Board comes with 20-20KHz electret microphone soldered ON. For amplification, use
Maxim MAX4466, Op-Amp designed specifically for the delicate task! Excellent amplifier power
Supply Noise Rejection, This Sound Amplifier Really Sounds and Not Almost Like Noisy or Scratchy Others
MIC AMP acne we try!
This breakout is ideal for projects such as voice changing, audio recordingmpling, and audio-reactive projects using FFT. On the back we have a small trimmer pot to adjust the gain. you can
Set Gain from 25X to 125X. That's down about 200mVpp. (For normal speaking, the volume is about 6"
away), which is for installing what you want the 'line level' input to have without cutting, or
Approximately 1Vpp is suitable for reading from ADC microcontrollers. RAIL-to-Rail output, so if the sound Gets
Loud, output up to 5Vpp!
Easy to use:
Connect GND to ground, VCC TO 2.4-5VDC.
For best performance, use "The quietest" Supply available (on an Arduino, this will be 3.3V)
Wave sound Will Come OUT OUT PIN. The output will have DC. BIAS of VCC/2 so when
Completely silent, the voltage will be constant VCC/2V (DC coupled).
Requires an AC coupled audio, place a 100uF capacitor between the output PIN and the input of your device. If
You connect an audio amplifier that has a differential input or includes a capacitor,
100uF cap is not required
The output pin is not designed to drive speakers or anything, but is the smallest in headphones - you'll need
sound amplifier (eg 3.7W stereo AMP) if you want to connect the AMP directly to the speaker. If Mr.
Connect the microcontroller Pin, don't need amplifier or decoupling. Capacitor-Connect OUT
Pin directly to the microcontroller ADC pin.
For audio-reactive projects we recommend using the FFT DRIVER Library which can input audio and 'translate' as frequency