MAX98357 I2S 3W Class D Digital Audio Amplifier Module (I2S Decoder)

The MAX98357 I2S 3W Class D Digital Audio Amplifier Module is a compact digital audio amplifier designed to convert I2S digital audio signals into amplified speaker output. It integrates a high efficiency Class D amplifier, allowing direct connection to digital audio capable microcontrollers and development boards without requiring an external digital to analog converter.

The module is suitable for embedded audio systems, IoT devices, smart speakers, voice projects, and portable audio applications. Its I2S interface enables easy integration with ESP32, Raspberry Pi, Arduino compatible boards, and other digital audio systems.

Key Features -

• MAX98357 based digital audio amplifier

• 3W Class D audio output

• I2S digital audio input

• High efficiency amplification

• Low power consumption

• Low distortion audio output

• Supports 4-8 Ohm speakers

• Compact PCB module design

• Suitable for ESP32, Raspberry Pi and Arduino projects

Specifications -

• Amplifier IC = MAX98357

• Operating Voltage = 2.5-5.5V DC

• Amplifier Type = Class D

• Output Power = Up to 3W typical at 4 Ohm and 5V

• Audio Input = I2S digital interface

• Audio Format = 16 bit, 44.1kHz typical

• Load Impedance = 4-8 Ohm

• Efficiency = Up to 90 percent

• Module Size = Approx. 28 x 18mm

• Operating Temperature = -40 to 85 C

Applications -

• ESP32 audio projects

• Raspberry Pi audio systems

• Smart speakers

• IoT audio devices

• Voice assistant projects

• Portable speaker systems

• Embedded audio systems

• Digital audio playback projects