PAM8403 Mini Amplifier Module

PAM8403 Mini Amplifier Module Overview

The PAM8403 Mini Amplifier Module is a compact, high-efficiency Class D audio amplifier based on the PAM8403 IC. Engineered for small speakers and low-power audio projects, this module delivers clear, low-distortion sound while operating on a wide voltage range. Its miniature size and low thermal output make it perfect for portable and embedded applications.

Why Choose the PAM8403 Mini Amplifier Module

• High efficiency Class D design provides excellent battery life and low heat.
• Clean audio performance up to 3W output for each channel in typical configurations.
• Simple wiring and built-in controls make it accessible for beginners and makers.

Key Features

• Compact and lightweight form factor for space-constrained projects.
• Wide input voltage range: 5 to 12V DC.
• Up to 3W maximum output power for driving small speakers.
• Class D amplifier chipset (PAM8403) for high efficiency and low heat.
• Built-in volume control for convenient sound adjustments.
• Low power consumption suitable for battery-powered designs.
• Simple audio input options, such as a 3.5mm jack or line-level input.

Technical Specifications

• Input Voltage: 5V to 12V DC
• Output Power: 3W max (typical small-speaker use)
• Chipset: PAM8403 (Class D audio amplifier IC)
• Amplifier Type: Class D (high efficiency, low heat)
• Frequency Response: 100Hz to 20kHz
• Typical Size: Approx. 4.5cm x 3cm
• Power Consumption: Low, ideal for battery-powered projects
• Audio Input: 3.5mm audio jack or other line-level input

Applications

• DIY portable speaker systems and Bluetooth speaker builds.
• Audio amplification for toys, robots, and small electronics.
• Prototyping and hobby audio projects requiring compact amplification.
• Low-power public address or notification systems in embedded designs.

Integration and Wiring Tips

• Power: Use a stable 5 to 12V DC supply. For battery operation, ensure voltage is within range under load.
• Speakers: Best paired with small 3W or similar-rated full-range drivers for clean output.
• Grounding: Share a common ground between the audio source and amplifier to reduce noise.
• Volume Control: Use the onboard potentiometer to adjust output level; avoid driving the module at maximum volume for extended periods to preserve speaker life.

Performance and Troubleshooting

• Hissing or noise: Check grounding and use shielded audio cables for long runs.
• Distortion at high volumes: Confirm speaker impedance and avoid exceeding recommended power limits.
• Overheating: Class D produces little heat, but ensure airflow if the module is enclosed in a tight case.

Note: Product images are for illustration only; actual product appearance may vary.