MAX98357A I²S 3W Class D Amplifier DAC Audio Module

The MAX98357A I²S 3W Class D Amplifier Module is a compact digital audio solution that directly converts I²S audio data into high-quality output for speakers. With its built-in DAC + Class D amplifier, it eliminates the need for an external DAC, making it ideal for space-saving designs. Capable of delivering up to 3W output power into a 4Ω speaker, it is perfect for DIY audio projects, IoT devices, smart speakers, and voice assistants.

⚙️ Short Specifications

• Model: MAX98357 / MAX98357A

• Input Interface: I²S (Digital Audio)

• Supply Voltage: 2.5V – 5.5V

• Output Power: Up to 3W @ 4Ω load, 5V supply

• Speaker Load: 4Ω–8Ω

• Efficiency: Up to 92%

• Integrated DAC: 16/24/32-bit audio data support

• Package Type: Breakout module

🌟 Key Features

• All-in-one I²S DAC + Class D amplifier solution.

• Directly drives a 4Ω/8Ω speaker with up to 3W output.

• Supports 16–32 bit audio formats, up to 48kHz sample rate.

• High efficiency (92%) for battery-powered applications.

• Minimal external components required, simple integration.

• Compact size – perfect for DIY and embedded audio projects.

• Thermal and short-circuit protection for reliable operation.