Description
Product Overview
The New High Quality MAX98357 / MAX98357A I2S 3W Class D Amplifier Breakout delivers crystal‑clear audio in a compact, easy‑to‑integrate board. Designed for hobbyists, makers, and professionals, this I2S DAC decoder turns digital audio streams into powerful 3 W stereo sound with minimal distortion, making it perfect for portable speakers, IoT devices, and DIY audio projects.
Key Highlights
- ✅ 3 W per channel output into 4 Ω loads – ideal for small to medium‑size speakers.
- ✅ Built‑in MAX98357 / MAX98357A Class D amplifier for high efficiency and low heat.
- ✅ Native I2S interface – simple connection to ESP32, Raspberry Pi, Arduino, and other microcontrollers.
- ✅ Integrated DAC decoder eliminates the need for external DAC chips.
- ✅ Compact breakout size (27 mm × 18 mm) with clear silkscreen labeling.
- ✅ On‑board low‑pass filter for smooth audio output.
- ✅ Supports 16‑bit/24‑bit audio data at up to 48 kHz sample rate.
Technical Specifications
- Amplifier Type: Class D (MAX98357 / MAX98357A)
- Output Power: 3 W per channel into 4 Ω
- Supply Voltage: 2.7 V – 5.5 V (typical 5 V)
- Audio Interface: I2S (BCLK, LRCK, DIN)
- Supported Audio Formats: PCM 16‑bit/24‑bit, 44.1 kHz – 48 kHz
- THD+N: < 0.01 % (typical)
- Operating Temperature: -40 °C – 85 °C
- Dimensions: 27 mm × 18 mm × 1.6 mm (0.7 in × 0.7 in × 0.06 in)
- Connector: 4‑pin 0.1 in pitch header (GND, VCC, BCLK, LRCK, DIN)
Compatibility & Applications
This breakout board works seamlessly with popular development platforms such as ESP‑32, ESP‑8266, Raspberry Pi Pico, Arduino Nano 33 IoT, and STM32. Ideal for:
- Portable Bluetooth speakers
- Smart home voice assistants
- Wearable audio devices
- DIY music players and soundbars
- Robotics and IoT projects requiring clear audio feedback
Why Choose This Amplifier?
Choosing the MAX98357/MAX98357A breakout means you get a reliable, high‑performance audio solution without the complexity of separate DAC and amplifier components. Its low power consumption, built‑in protection features, and easy I2S wiring let you focus on creativity, not hardware headaches.
SEO Keywords
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