MAX98357 I2S 3W Class D Amplifier Audio Decoder Module - Filterless

The MAX98357 I2S 3W Class D Amplifier Interface Audio Decoder Module is the perfect companion for your Raspberry Pi or ESP32 projects, offering seamless integration and powerful audio capabilities. This module accepts digital audio input via the I2S interface, converting it to analog output and amplifying it for direct speaker connection, all in one compact board.

  Key Features:  

• Integrated Functionality: Combines an I2S D/A converter with a powerful audio amplifier on a single board, simplifying audio processing tasks.
• High Power Output: Despite its small size, this stereo amplifier module delivers up to 3.2W on 4Ω impedance speakers, ensuring rich and clear audio output.
• Wide Voltage Range: Operates seamlessly with a voltage range of 2.7V to 5.5V, making it suitable for various projects, including mobile and battery-powered applications.
• Versatile Gain Settings: Adjustable gain settings allow for fine-tuning of audio output, with selectable gains of 3dB, 6dB, 9dAB, 12dB, and 15dB to suit different requirements.
• Flexible Signal Mixing: By default, stereo signals (L and R) are mixed to form an output signal, with the option to customize behavior using a resistor to output only L or R signals.

  Specifications:   

• Output Power: 3.2W at 10% THD, 4Ω impedance speaker, 5V power supply
• Operating Voltage: 2.7V to 5.5V
• PSRR (Power Supply Rejection Ratio): 77dB at 1kHz
• Selectable Gains: 3dB, 6dB, 9dB, 12dB, 15dB

  Package Includes:  

• 1 x MAX98357 I2S 3W Class D Amplifier Interface Audio Decoder Module