MAX98357 I2S Class-D Audio Amplifier Module

Operating Voltage: DC 2.7V to 5.5V (Typically 3.3V to 5V)

Output Power: 3.2W into 4Ω at 5V (10% THD), 1.8W into 8Ω at 5V

Audio Interface: Digital I2S Input (Supports 8kHz to 96kHz sample rates)

Speaker Impedance: 4Ω to 8Ω

Gain Settings: Selectable gains (3dB, 6dB, 9dB, 12dB, 15dB)

Efficiency: Up to 92% (Filterless Class-D operation)