Features:
Supports digital audio input via I2S interface
Built-in DAC and Class D amplifier
Delivers up to 3.2W output power into a 4Ω speaker (at 5V)
Wide sampling rate support from 8kHz to 96kHz
High efficiency with low heat generation
No external components required for basic operation
Connection (Wiring Guide):
To connect the MAX98357A module to a microcontroller (e.g., ESP32 or Arduino with I2S support):
VIN → Connect to 3.3V or 5V power supply
GND → Connect to system ground
LRC (WS) → Connect to I2S Word Select (Left/Right Clock) pin
BCLK → Connect to I2S Bit Clock pin
DIN → Connect to I2S Data Output (from microcontroller)
GAIN → (Optional) Configure gain by connecting to GND or leaving floating
SD (Shutdown) → Connect to VCC for normal operation
Speaker Connection:
Connect the speaker directly to SPK+ and SPK- outputs
Recommended speaker: 4Ω or 8Ω
