Aideepen 5pcs Electret Microphone Amplifier MAX4466 Module Adjustable Gain Blue Breakout Board for Arduino
Aideepen 5pcs Electret Microphone Amplifier MAX4466 Module Adjustable Gain Blue Breakout Board for Arduino by Aideepen at Buditech. MPN: 70117045. Hurry! Limited time offer. Offer valid only while supplies last. Description: On the back, we include a small trimmer pot to adjust the gain. You can set the gain from 25x to 125x. That's down to be about 200mVpp
On the back, we include a small trimmer pot to adjust the gain.
You can set the gain from 25x to 125x. That's down to be about 200mVpp (for normal speaking volume about 6" away) which is good for attaching to something that expects 'line level' input without clipping,
or up to about 1Vpp, ideal for reading from a microcontroller ADC.
The output is rail-to-rail so if the sounds gets loud, the output can go up to 5Vpp!
Connect GND to ground, VCC to 2.4-5VDC.
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.
5* Blue MAX4466 Electret Microphone Amplifier Module
Features & Highlights
- The board comes with a 20-20KHz electret microphone soldered on
- Using the MAX4466, an op-amp specifically designed for amplifier
- For the best performance, use the "quietest" supply available (on an for Arduino, this would be the 3.3V supply)
- The amplifier has excellent power supply noise rejection
- This breakout board is best used for projects such as voice changers, audio recordingmpling, and audio-reactive projects that use FFT
|Item Weight:||0.04 pounds|
|Package Weight:||0.03 pounds|
|Package Size:||3.03 x 1.5 x 1.5 inches|
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