• Previous
    Adafruit Perma-Proto Raspberry Pi Breadboard PCB Kit
  • Next
    NeoPixel Stick - 8 x 5050 RGBW LEDs - Warm White - ~3000K

Electret Microphone Amplifier - MAX9814 with Auto Gain Control

15-20 Days
Product Code: RM3146

15-20 Days


Electret Microphone Amplifier - MAX9814 with Auto Gain Control

This fancy microphone amplifier module is a step above the rest, with built in automatic gain control. The AGC in the amplifier means that nearby 'loud' sounds will be quieted so they don't overwhelm & 'clip' the amplifier, and even quiet, far-away sounds will be amplified. This amplifier is great for when you want to record or detect audio in a setting where levels change and you don't want to have to tweak the amplifier gain all the time.
The chip at the heart of this amp is the MAX9814, and has a few options you can configure with the breakout. The default 'max gain' is 60dB, but can be set to 40dB or 50dB by jumpering the Gain pin to VCC or ground. You can also change the Attack/Release ratio, from the default 1:4000 to 1:2000 or 1:500. The ouput from the amp is about 2Vpp max on a 1.25V DC bias, so it can be easily used with any Analog/Digital converter that is up to 3.3V input. If you want to pipe it into a Line Input, just use a 1uF blocking capacitor in series.
  • Maxim MAX9814 Amplifier
  • Auto-Gain 60dB - Adjustable to 40dB or 50dB by jumpering between GAIN to VCC or GND
  • Ampy Oupt 2Vpp max on a 1.25V DC
  • Excellent low-noise performance


Reviews (0)

Write a review

Note: HTML is not translated!
    Bad           Good
Note : Images shown is only for representation. The actual product may vary with the picture shown.
Check out this bundle:
Bundle price:

You save