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Sound sensor module voice control switch strength detection audio amplifier microphone LM386

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Sound sensor module voice control switch strength detection audio amplifier microphone LM386

The LM386 is an audio integrated power amplifier with its own low power consumption, adjustable gain for updating the internal chain, wide supply voltage range, fewer external components and less total harmonic distortion. It is mainly used in low-voltage consumer products. In order to minimize the peripheral components, the voltage gain is built-in as 20, and by adding an external resistor and capacitor between pin 1 and pin 8, the voltage gain can be adjusted to any value within 200.
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The LM386 is an audio integrated power amplifier with its own low power consumption, adjustable gain

for updating the internal chain, wide supply voltage range, fewer external components and less total

harmonic distortion. It is mainly used in low-voltage consumer products. In order to minimize the peripheral

components, the voltage gain is built-in as 20, and by adding an external resistor and capacitor between

pin 1 and pin 8, the voltage gain can be adjusted to any value within 200.

Usage: Detecting the presence or absence of ambient sound and judging the intensity of sound.

Audio amplifier chip LM386 (magnified by 200x) Working voltage 3.3V-5.5V Product size 39.0mm * 21.0mm Fixed hole size 2.0mm


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