MAX98357 I2S Audio Amplifier Module

 4,750

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Description

The MAX98357 Module is a powerful and efficient mono Class D amplifier with digital audio input via I2S, making it ideal for modern embedded audio applications. With its compact size and high-efficiency performance, it allows you to easily add high-quality sound output to microcontrollers like the ESP32, Raspberry Pi, or Arduino.

Key Features

  • Digital Audio Interface (I2S): Direct connection to I2S-capable microcontrollers—no DAC required.
  • Class D Amplification: High-efficiency output with minimal heat generation.
  • Mono Output: Delivers up to 2Wof audio power into a 4Ω speaker (at 5V).
  • Low THD+N: Delivers clean audio with minimal distortion.
  • Automatic Clock Detection: Supports various I2S sample rates without configuration.
  • Tiny, Breadboard-Friendly Design: Easy to integrate into compact or portable projects.

Technical Specifications

  • Amplifier Type: Mono Class D
  • Input: I2S digital audio
  • Output Power: Up to 3.2W @ 5V into 4Ω speaker
  • Operating Voltage: 2.5V – 5.5V DC
  • THD+N: < 0.1%
  • Efficiency: Up to 92%
  • I2S Sample Rates Supported: 8kHz to 96kHz
  • Output Load: 3Ω – 8Ω speakers
  • Dimensions: 18mm x 19mm

Applications

  • Voice assistants and smart speakers
  • IoT audio feedback systems
  • MP3/music playback in DIY projects
  • Talking devices and robots
  • Educational and STEM kits
  • Portable sound systems or alarms
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