Product Description

Electret Microphone Amplifier - MAX9814 with Auto Gain Control

Product characteristics

MAX9814 is a low cost and high performance microphone amplifier with automatic gain control (AGC) and low noise microphone bias. The device has low noise front-end amplifier, variable gain amplifier (VGA), output amplifier, microphone bias voltage generator and AGC control circuit.


Product details

Automatic gain control (AGC)

Three gain settings (40dB, 50dB, 60dB) can be used for programmable action time

Programmable action and release time ratio power supply voltage range 2.7V?5.5V

Low THD: 0.04% (typical)

Low power shutdown mode

Built-in 2V low noise microphone bias


Pin description

VCC: positive power supply

GND: ground

GAIN:

Gain control of tri-state amplifier

GAIN=VDD and the gain is set to 40db

GAIN=GND, and the gain is set to 50db

GAIN= floating, and the gain is set to 60db

OUT: amplifier output

AR:

Three-state start-up and release ratio selection controls the start-up time and release time ratio of AGC circuit

A/R=GND: start/release ratio is 1:500

A/R=VDD: start/release ratio is 1:2000

A/R= suspended: start/release ratio is 1:4000


  • Comments(0)
You can only upload 1 files in total. Each file cannot exceed 2MB. Supports JPG, JPEG, GIF, PNG, BMP
0 / 10000

    You might like

    • -7%
      Waveshare Barcode QR Scanning Identification Module
      4320 Beans
      Redeem Now
    • NFC Expansion Board PN532/RFID
      2400 Beans
      Redeem Now
    • Digital Thermometer(black)
      240 Beans
      Redeem Now
    • M5Stack ESP32 Wi-Fi Camera
      2880 Beans
      Redeem Now
    • Touch Key Switch Induction Module
      240 Beans
      Redeem Now
    • -12%
      VL53L0X laser ranging module
      840 Beans
      Redeem Now
    • AS608 Optical Fingerprint Identification Module
      1200 Beans
      Redeem Now
    • Blood oxygen external pulse detection heartbeat sensor module
      480 Beans
      Redeem Now
    • Sound sensor module (voice control switch, audio detection/analog + digital)
      720 Beans
      Redeem Now
    • MQ135 air quality sensor module
      100 Beans
      Redeem Now
    • LPC845 sensor analog module
      1200 Beans
      Redeem Now
    • KY-006 Passive Piezoelectric Buzzer Alarm Sensor Module
      100 Beans
      Redeem Now
    • 4 Pin Flame Sensor Fire Detection Module Infrared Receiver
      200 Beans
      Redeem Now
    • Microphone Module I2S Interface Inmp441 Mems High Precision Low Power Ultra Small Volume
      500 Beans
      Redeem Now
    • Raindrops Detection Sensor Module
      100 Beans
      Redeem Now
    • MQ2 Gas Sensor Module
      200 Beans
      Redeem Now
    • TCRT5000 Infrarot Infrared LineTrack Follower Verfolgung Reflexlichtschranke
      100 Beans
      Redeem Now
    • HC-SR505 Mini Infrared PIR Motion Sensor Precise Infrared Detector Module
      200 Beans
      Redeem Now
    • MAX30100 Heart-Rate Oximeter Pulse Sensor Pulsesensor Module
      600 Beans
      Redeem Now
    • TTP223B Digital Touch Sensor Capacitive Touch Switch Module for Arduino 5.5V
      100 Beans
      Redeem Now
    Product Name
    Link for reference
    Quantity