The LM386 Audio Amplifier Module is built around the LM386 low power audio amplifier IC — a classic chip designed specifically for battery-operated and low-voltage audio applications. It runs on 4V to 12V DC, making it compatible with 9V PP3 batteries, USB power banks, and regulated bench supplies. The lm386 audio amplifier delivers up to 0.5W of mono output, enough to drive a small 8-ohm speaker at audible volume in quiet environments.
One trade-off to understand — 0.5W is not enough for outdoor or noisy workshop use. At higher gain settings, the LM386 IC can introduce audible hiss, especially when the input signal is weak. The board measures just 41mm x 13mm, so it fits inside compact enclosures. Per the lm386 datasheet, internal gain is fixed at 20 but can be raised to 200 by adding a capacitor between pins 1 and 8.
The lm386 audio module is popular among Indian hobbyists for walkie-talkie receivers, Arduino audio output stages, and portable intercom builds. The lm386 amplifier module requires no external driver IC and connects directly between an audio source and a speaker.
Related Products:
- Checkout PAM8403 Audio Amplifier Module
Features:
- LM386 IC operates across 4V to 12V DC without external regulators
- Output power up to 0.5W drives 8-ohm speakers at room volume
- Gain adjustable from 20 to 200 using external capacitor on IC pins
Technical specifications:
| Specification | Details |
|---|---|
| IC Used | LM386 low power audio amplifier |
| Supply Voltage | 4V to 12V DC |
| Output Power | Up to 0.5W |
| Channel Type | Mono |
| Board Size | 41mm x 13mm |
| Distortion | Low |
Applications:
- Arduino audio project amplifies PWM signal using LM386 Audio Amplifier Module
- Portable radio project amplifies demodulated signal via lm386 amplifier module
- Signal generator output stage connects to speaker through low power amplifier
Package Includes:
- 1 x LM386 Audio Amplifier Module
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