Product details
The MAX98357 I2S 3W Class-D Audio Amplifier Module is a compact, high-efficiency digital audio solution designed for modern embedded systems. It accepts pure digital audio via the I2S interface and directly drives a speaker—no external DAC required. By integrating a high-quality I2S DAC with a powerful Class-D amplifier on a single board, it simplifies your audio design while delivering clear, powerful sound output.
Perfect for microcontroller and SBC projects, including Raspberry Pi, ESP32, Arduino, and other I2S-compatible platforms, this module provides clean audio performance with minimal wiring and excellent power efficiency.
By default, stereo signals (left + right) are automatically mixed into a mono output. If needed, the module can be easily configured using a resistor to output only the left or right channel.
Specifications:
- Model: MAX98357
- Output Power: 3.2W at 10% THD (4Ω Impedance Speakers, 5V Power Supply)
- Operating Voltage: 2.7V – 5.5V
- PSRR (Power Supply Rejection Ratio): 77 dB at 1 kHz
- Selectable Gain Options: 3 dB, 6 dB, 9 dB, 12 dB, 15 dB
- Input Compatibility: I2S digital audio input with support for 3.3V and 5V signal levels
- Signal Mixing: Default stereo signal mixing (L + R)
- Resistor Configuration: Easily configurable for individual L or R channel output
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