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Three small purple circuit boards with gold pins and surface-mounted chips

KEHIPI

KEHIPI 3 PCS MAX98357 Audio Adapter I2S Class D 3.2W 1.8W 8kHz-96kHz Purple

SKU CH-2ANM-EN4XM

Three MAX98357 I²S Class D amplifier boards deliver 3.2 W at 4 Ω or 1.8 W at 8 Ω with selectable gain and 8 kHz–96 kHz sampling

  • ColorPurple
  • SpecificationsAITRIP
  • Delivers 3.2 watts into 4 ohms at 10% THD
  • Handles 1.8 watts into 8 ohms at 10% THD
  • Supports I2S sample rates from 8 kHz to 96 kHz
  • Selectable Class D gain from 3 dB to 15 dB
  • Auto-configures 35 clocks and 128 formats with single supply

Audio amplifier module for I2S projects

This pack supplies three MAX98357 Class D amplifier boards that accept I2S digital audio from microcontrollers such as Arduino, Raspberry Pi or ESP32. Each module delivers up to 3.2 W into 4 Ω or 1.8 W into 8 Ω at 10 % THD and operates from a single 2.5 V to 5.5 V supply. The filterless design removes the need for an external master clock.

Pin header layout and gain selection

The board exposes LRC, BCLK, DIN, GAIN, SD, GND and VCC pins for direct wiring or header soldering. Gain can be set to 3 dB, 6 dB, 9 dB, 12 dB or 15 dB via the GAIN pin, while the SD pin enables shutdown mode when pulled low. Automatic configuration supports 35 clock rates and 128 digital audio formats across the 8 kHz to 96 kHz sampling range.

Check I2S capability and speaker impedance

Verify that your development board provides an I2S audio output before ordering. Choose speakers rated for 4 Ω or 8 Ω to match the specified output power figures. Ensure your power source can supply 2.5 V to 5.5 V DC and that the chosen gain setting suits your application’s volume requirements.

Highlights

  • Delivers 3.2 watts into 4 ohms at 10% THD
  • Handles 1.8 watts into 8 ohms at 10% THD
  • Supports I2S sample rates from 8 kHz to 96 kHz
  • Selectable Class D gain from 3 dB to 15 dB
  • Auto-configures 35 clocks and 128 formats with single supply

Specifications

BrandAITRIP
ModelMAX98357
ColorPurple
SpecificationsAITRIP

Questions about this item

What I2S sampling-rate range does the MAX98357 support?

The module handles I2S sample rates from 8 kHz up to 96 kHz without needing an external master clock.

What supply voltage and speaker impedance can the board drive?

It runs on 2.5 V to 5.5 V and delivers 3.2 W into 4 Ω or 1.8 W into 8 Ω at 10 % THD.

How do you set the gain and channel on the GAIN and SD pins?

Tie the GAIN pin to choose 3, 6, 9, 12 or 15 dB gain and left/right channel; pull SD_MODE low to shut the device down.

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