MAX98357 I2S 3W Class-D Audio Amplifier Module

MAX98357 I2S 3W Class-D Audio Amplifier Module is a compact and efficient audio amplifier designed for digital audio projects. Based on the MAX98357A IC, this module receives audio data through the I2S (Inter-IC Sound) interface and directly drives a speaker with up to 3W output power.

Unlike traditional analog amplifiers, the MAX98357 processes digital audio streams, eliminating the need for a DAC (Digital-to-Analog Converter). It is highly efficient, producing clear sound with minimal power consumption, making it perfect for portable devices, IoT projects, and DIY audio applications.

With built-in gain control, short-circuit, and thermal protection, this module is beginner-friendly and reliable. It can be easily integrated with ESP32, Raspberry Pi, Arduino (with I2S support), and other microcontrollers for smart audio applications.

Features & Details:

• Based on MAX98357A I2S Class-D amplifier IC.
• Delivers up to 3W output power at 4Ω speakers.
• I2S digital audio input (no DAC required).
• Works with ESP32, Raspberry Pi, Arduino (I2S).
• Built-in gain control (3dB, 6dB, 9dB, 12dB, 15dB, 18dB).
• High efficiency, low distortion, and low noise.
• Integrated thermal & short-circuit protection.
• Compact PCB design for easy integration.
• Operates at 2.5V – 5.5V power supply.

Applications:

• DIY portable speakers.
• Voice assistant & smart home devices.
• IoT projects requiring audio output.
• Raspberry Pi & ESP32 audio streaming.
• Educational & hobby audio experiments.

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