Description
PAM8403 Ultra-Compact 2*3W Class D Digital Power Amplifier Board
Overview: The PAM8403 is a highly efficient, 2-channel stereo Class D digital power amplifier board, capable of delivering 3W+3W of power. Its ultra-miniature design, roughly the size of a coin (1.85 x 2.11 cm), makes it ideal for a wide range of applications, particularly in portable and digital devices.
Key Features:
- Superb Noise Suppression: No audible noise even when no audio input is present and the ear is close to the speaker.
- Power Supply Versatility: Can be powered by a computer’s USB port, USB power banks, mobile phone chargers, or lithium batteries.
- High Efficiency: Up to 90%, capable of driving 4Ω or 8Ω small speakers.
- Output Power: Capable of delivering 3W (left channel) + 3W (right channel) with a 5V power supply.
- LC Filter-Free Design: Offers clear sound quality and high energy output.
- Dual-Sided PCB: Minimizes ground potential imbalance and crosstalk between channels.
- Machine Soldering: Ensures superior soldering quality over manual soldering.
Specifications:
- Model: PAM8403
- Operating Voltage: 2.5V-5.5V (Do not exceed 5.5V)
- Speaker Compatibility: 4-8 Ohms; recommended 4 Ohms
- Size: Ultra-small footprint, 1.85cm x 2.11cm
- Rated Working Voltage: 2.5-5V, limit working voltage 5.5V
Additional Information:
- Built-in Protection: Features short-circuit over-current protection and over-temperature protection (shuts down at 140°C ±15°C).
- Note: The negative outputs for the left and right channels should not be connected together to prevent damage to the IC.
- Applications: Suitable for LCD TVs, monitors, laptops, portable speakers, portable DVD players, gaming systems, phones/hands-free devices.
- Installation Caution: Connect speakers before powering on to avoid damage to the chip. Avoid excessive input audio signal to prevent signal clipping.
Package Contents:
- PAM8403 Class D Stereo Audio Power Amplifier Module (5 pieces)
