MAX98357 I2S Audio Amplifier Module

About this item

🔊 MAX98357 I2S DAC Digital Audio Amplifier Module

💡 Integrated DAC + Mono Amplifier

The MAX98357A is a compact I2S digital audio decoder with an integrated 3.2W class-D amplifier. It supports various audio formats (16/24/32-bit, up to 96kHz) and features automatic clock recovery, short-circuit protection, and thermal shutdown.

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🛡️ Built-In Protections

• 🔁 Short-circuit protection
• 🌡️ Thermal shutdown
• 🔄 Automatic clock recovery
• 📴 Click-and-pop suppression

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📦 Compact & Versatile

This module runs on 3.3V–5V power and is plug-and-play with popular microcontrollers like the ESP32, STM32, and Raspberry Pi. It simplifies audio output by combining a DAC and amplifier into a single compact board.

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🛠️ Applications

• 📱 ESP32/STM32/RPi audio projects
• 🧠 Voice feedback in AI/robotics
• 📢 Portable speaker systems
• 🎙️ Smart home assistants
• 🚀 Educational electronics kits

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⚠️ Notes

• ✅ Connect L/R pin to GND for mono left, or to 3.3V for mono right
• ⚠️ Ensure proper I2S signal configuration on your microcontroller
• 📘 Avoid powering via 5V if connected directly to 3.3V-only GPIOs

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✨ Key Features

• 🎼 Input interface: I2S (16/24/32-bit, up to 96kHz)
• 🔊 Output power: Up to 3.2W (8Ω speaker @ 5V)
• ⚡ Voltage range: 3.3V to 5V
• 📏 Size: ~19mm x 14mm
• 📦 Speaker connection: Mono, up to 4-8Ω
• 🚫 No external DAC required
• 🧊 Low noise and low THD+N

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🔗 Useful Links

• 📄 MAX98357A Datasheet (PDF)
• 📘 Adafruit MAX98357 Guide
• 🧪 Example ESP32 Code