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The MAX98357A Audio Amplifier DAC Module is a compact solution for adding digital audio playback to microcontroller projects. It accepts I²S digital audio input and outputs amplified analog sound up to 3W, suitable for small speakers.
With high efficiency Class D amplification, this module minimizes heat generation and maximizes battery life, making it perfect for portable audio devices, smart speakers, and IoT sound applications.
It’s fully compatible with Arduino, ESP32, Raspberry Pi, and other platforms that support I²S communication. Simple wiring and minimal setup make it beginner-friendly yet powerful for advanced audio projects.
⚙️ Features
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🎵 3W Class D audio amplifier output
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🔌 Direct I²S digital audio input
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⚡ Low power consumption and high efficiency
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🧩 Compact and easy-to-integrate module
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💻 Compatible with Arduino, ESP32, Raspberry Pi
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🎚️ Supports high-quality audio with low distortion
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🌡️ Minimal heat generation for long-term operation
📊 Specifications
| Parameter | Description |
|---|---|
| IC Model | MAX98357A |
| Amplifier Class | D |
| Output Power | 3W (8Ω speaker, typical) |
| Input | I²S digital audio |
| Operating Voltage | 2.5V – 5.5V |
| Efficiency | >90% |
| THD+N | 0.1% typical |
| Interface | I²S (DIN, BCLK, LRC/WS) |
| Speaker Impedance | 4 – 8Ω |
| Dimensions | Approx. 20mm × 20mm × 5mm |
