MAX98357 I2S 3W Class D Amplifier Audio Decoder Module

Overview

Enhance your audio projects with the MAX98357 I2S 3W Class D Amplifier Module. This compact, efficient amplifier accepts digital audio via the I2S interface, converts it to analog, and amplifies it to drive speakers directly – no additional DAC or amplifier circuitry needed. Perfect for Raspberry Pi, ESP32, and other microcontroller projects that require high-quality audio output.

Key Features

• I2S Digital Input: Directly interfaces with digital audio sources, eliminating the need for separate DACs.
• Class D Amplification: High efficiency (up to 85%) with minimal heat generation, ideal for battery-powered projects.
• 3.2W Output Power: Delivers clear, powerful audio at 10% THD into a 4Ω speaker.
• Wide Voltage Range: Operates from 2.7V to 5.5V, compatible with 3.3V and 5V logic levels.
• Simple Wiring: Only 5 pins needed – VIN, GND, BCLK, LRC, and DIN – for easy integration.
• Built-in Gain Control: Adjustable gain via solder jumpers (3dB, 6dB, 9dB, 12dB, 15dB, 18dB) for flexible volume matching.

Technical Specifications

• Model: MAX98357
• Input Interface: I2S (BCLK, LRC, DIN)
• Output Power: 3.2W at 10% THD (4Ω load)
• Supply Voltage: 2.7V – 5.5V DC
• Efficiency: Up to 85%
• Signal-to-Noise Ratio: >90dB
• Dimensions: 22mm x 18mm x 4mm
• Weight: 2g

Applications & Use Cases

• Raspberry Pi Projects: Add sound to retro gaming consoles, media centers, or voice assistants.
• ESP32 / Arduino: Create internet radios, smart speakers, or audio-reactive LED projects.
• Portable Speakers: Build compact, battery-powered Bluetooth speakers.
• Educational Kits: Teach digital audio concepts and I2S communication.
• DIY Synthesizers: Generate and amplify synthesized sounds.

What's Included

• 1 x MAX98357 I2S 3W Class D Amplifier Module
• 1 x Pin header strip (2.54mm)

Compatibility

• Microcontrollers: Raspberry Pi (all models with I2S), ESP32, ESP8266, Arduino (with I2S library), STM32, Teensy, and more.
• Operating Systems: Works with Raspberry Pi OS, Volumio, Moode Audio, and other Linux distributions.
• Speakers: 4Ω to 8Ω impedance, up to 3W continuous power.

MOKWN Recommendation

Whether you're a hobbyist, student, or professional maker, the MAX98357 is a fantastic, low-cost solution for adding high-quality audio to your projects. Its simplicity and efficiency make it a must-have for any electronics enthusiast. Order today and enjoy fast delivery across Egypt – perfect for your next build!