Microphone Amplifier – MAX9814 w/ Auto Gain Control

MAX9814 microphone amplifier Price in Pakistan

The MAX9814 microphone amplifier module combines an electret microphone input with automatic gain control, helping a project handle changing sound levels without constant manual adjustment. It is suitable for sound-reactive lighting, audio-level detection, voice experiments and microcontroller ADC projects.

When comparing a MAX9814 microphone amplifier price in Pakistan, review the supply range, output bias and selectable gain options for your board revision. The output is an analog waveform, so it should be sampled by a compatible ADC and is not a direct digital-audio stream. Keep wiring short and clean to reduce noise pickup.

Microphone Amplifier – MAX9814 w/ Auto Gain Control

Add an ear to your project with this well-designed electret microphone amplifier with AGC. This fully assembled and tested board comes with a 20–20KHz electret microphone soldered on. For the amplification, we use the Maxim MAX9814, a specialty chip that is designed for amplifying electret microphones in situations where the loudness of the audio isn’t predictable.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 1–100uF blocking capacitor in series (100uF sounds best).

Browse more audio and Arduino sensor modules at Robonation Pakistan. For setup limits and technical guidance, review the official MAX9814 product documentation.