Electret Microphone Amplifier - MAX4466 with Adjustable Gain

Electret Microphone Amplifier - MAX4466 with Adjustable Gain

Electret Microphone Amplifier - MAX4466 with Adjustable Gain

8,61 VAT INCLUDED

Available

8,61 VAT INCLUDED

Magneto-electric microphone amplified by 20-20KHz. Supply range 2,4-5VDC. Ideal for voice-changers, sound recording / sampling, and sound-responsive projects that FFT uses.

Available: 2 available COD: AD1063 Categories: , Tag:
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1-2 8,61
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Description

Make your project listen with this magneto-electric microphone amplified by 20-20KHz. The Maxim MAX446 was used for the amplification, an operational amplifier specifically designed for this delicate task. The amplifier has an excellent rejection of power supply noise, with the result that the sound will be quite good and not too loud or shrill.

The best use for this breakout board is in projects like voice-changers, sound recording / sampling, and sound-responsive projects that FFT uses. On the back side of the card, a small potentiometer is included to change the gain. It is possible to set the gain from 25x to 125x. It then goes from a peak-to-peak voltage of around 200mVpp (a person who speaks at normal volume to a distance of about 15cm) who are good for attacking something downstream that expects input at a "line level" without clipping, to about 1Vpp, ideal to read the result with the ADC converter of a microcontroller. The output is rail-to-rail, so if the sound gets noisy, the output can go up to 5Vpp.

To use it, connect the GND pin to ground, VCC to 2,4-5VDC. To get the best performance, use the most moderate power possible (if you use an Arduino, it would be the one available from the 3,3V pin). The audio waveform comes out of the OUT pin.

The OUT pin is not designed to drive speakers or anything other than a small pair of earphones. You will need an audio amplifier (such as 3,7W, available on the store) if you want to connect the microphone directly to the speakers. If instead you intend to connect it directly to the pins of a microcontroller, then you do not need an amplifier or a capacitor for decoupling, connected the pin OUT directly to the ADC pin of the microcontroller (on Arduino are the pins A).

For audio-reactive projects, we recommend using one FFT-driver-library type the one used in this Adafruit project, which can take an input audio signal and "translate" it into frequencies.

TECHNICAL SPECIFICATIONS: 
MAX446 Low-Noise Microphone Amp DatasheetElectret Capsule Microphone Datasheet
TUTORIALS:
Voice changer project [by Adafruit]

Additional information

Weight 0.83 lbs
Dimensions 5 × 1 × 3 cm
Brand

Adafruit

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