MAX98357 I2S 3W Class D Filterless Audio Amplifier Module for Raspberry Pi/ESP32
 
Features:
The MAX98357 Pulse Code Modulation(PCM)and MAX98358 Pulse Density Modulation(PDM)plug-and-play speaker amplifiers take full advantage of Maxim's flexible bow and pin arrangements
Output Power: 3.2W at 40, 10%THD, 1.8W at 80, 10%THD
12S sampling rate: 8Khz~96Khz
Class D amplifier Gain selectable: 3dB/6dB/9dB/12dB/15dB
No master clock(MCLK)required
Plug and Play:35 different clocks and 128 digital tones can be automatically
configured with only a single power supply
Suitable for Raspberry Pi, Arduino and ESP32, and other tools, with I2S audio output Controller or development board system
Compared to typical analog amplifier solutions, the component count is greatly reduced, resulting in a significant reduction in solution size
These features allow users to take advantage of Maxim's cost-effective wafer-level packaging (WLP)without the need for expensive PCB VIAs since most users control the volume digitally
To achieve excellent sound quality, the device uses digital inputs with high noise immunity and high jitter tolerance(at least 8dB better than competing solutions)
The device also provides excellent electromagnetic interference (EMI) rejection, allowing long-term speaker connections without the need for additional external filtering
In addition, the device offers the industry's highest Class D efficiency