Description
The LM386 Audio Amplifier Module is a compact, high-gain, low-power audio amplifier designed for boosting weak audio signals in DIY electronics, embedded systems, and audio applications. Built around the reliable LM386 amplifier IC, it delivers clear sound output with minimal distortion.
With an adjustable gain of up to 200X, this module is ideal for amplifying signals from microphones, sensors, and low-level audio sources. Its small size and simple connections make it perfect for integration into portable and battery-powered projects.
Key Features
- High Gain Amplification (Up to 200X)
- LM386 Class-AB Amplifier Chip for low distortion audio
- Onboard Volume Control (10K potentiometer)
- Speaker Output Terminal for easy connection
- Pre-Exposed Input Pins for quick wiring
- Power LED Indicator for status monitoring
- Compact and Lightweight PCB Design
- Low Power Consumption – ideal for portable devices
Specification
- Amplifier Chip: LM386
- Gain: Adjustable up to 200X
- Power Supply: 5V – 12V DC
- Speaker Support: 8Ω – 16Ω
- Input Impedance: 50KΩ
- Total Harmonic Distortion (THD): 0.1%
- Board Dimensions: 41mm × 13mm
Pin Configuration
| Pin | Function |
|---|---|
| VCC | 5V – 12V DC power input |
| GND | Ground |
| IN+ | Audio signal input (positive) |
| IN- | Audio signal ground |
| SPK+ | Speaker output (positive) |
| SPK- | Speaker output (negative) |
Application
- Microphone pre-amplification
- DIY audio amplifier systems
- Embedded audio projects (Arduino, ESP32, Raspberry Pi)
- Portable speaker projects
- Signal amplification for sensors
-
Hobby electronics and prototyping