LM386 Sound Detection Voice Sensor - (AD30944)

Description:

The LM386 is an audio power amplifier with features such as low power consumption, adjustable voltage gain, a wide voltage range, reduced peripheral component requirements, and minimal total harmonic distortion. The LM386 can be applied to consumer products with low voltage requirements. To minimize the number of peripheral components used, the voltage gain should be set to 20. By connecting a resistor and capacitor externally between pins 1 and 8, the voltage gain can be set to any value within the range of 0 to 200.

Specs:

- Microphone sensitivity: 52 dB

- Frequency range: 50 Hz ~ 20 kHz

- Power supply: 3.3V ~ 5.3V

- Mounting hole size: 2.0 mm

Applications:

- Ambient sound detection

- Sound level detection

How to use with an MCU:

- VCC: 3.3V ~ 5.3V

- GND: Power supply ground

- AOUT: MCU.IO (analog output)

- DOUT: MCU.IO (digital output)

Reference link

Data sheet