MAX98357 I2S 3W Class D Audio Amplifier Module DAC Decoder Filterless for Raspberry Pi ESP32 with Pins Without Pins

High-concerned chemical : none is_d : Yes Dissipation Power : ... Supply Voltage : ... Application : Computer Type : Module Origin : Mainland China Condition : New Operating Temperature : -40℃~+80℃ Functions : Electronic Module Range of application : Switch And Sensor For Arduino STM

MAX98357 I2S 3W Class D Audio Amplifier Module DAC Decoder Filterless for Raspberry Pi ESP32 with Pins without Pins Key Features & Benefits I2S Digital Input: Built‑in DAC + amplifier.

No MCLK Required: Only LRCLK, BCLK, DIN + power.

3W Output: 3.2W into 4Ω, 1.8W into 8Ω.

️ Adjustable Gain: 3/6/9/12/15dB.

Wide Voltage: 2.5V – 5.5V – battery or USB.

️ Filterless: No external LC filter needed.

Plug & Play: Auto‑configures 35 clocks and 128 formats.

Two Versions: With pins (pre‑soldered) or without pins (solder yourself). Product Description Need high‑quality audio output for your Raspberry Pi, Arduino, or ESP32? This MAX98357 I2S audio amplifier module is the perfect choice. It integrates I2S decoding and Class D amplification – only LRCLK, BCLK, DIN, and power needed. 3W output drives small speakers. Adjustable gain. 2.5V-5.5V operation. Choose pre‑soldered or unsoldered header version. Perfect for DIY smart speakers, voice assistants, Raspberry Pi audio players. Quick Start Guide & Important Tips What It Does & What You Need Decodes I2S digital audio and drives a speaker

Supports 8kHz – 96kHz sample rates

Adjustable gain This module does NOT: Accept analog audio input, drive headphones (speaker only) You will need: I2S audio source (Raspberry Pi/Arduino/ESP32), speaker (4-8Ω), power supply (2.5-5.5V), header pins (for no‑pins version) Package includes:ins version) With Pins: Module with pre‑soldered header

Without Pins: Module with unsoldered header Pinout Wiring Example (ESP32) ️ Important: Output: BTL output – connect directly to speaker (4-8Ω). Do not ground or connect to another amplifier.

Power: 2.5V-5.5V only. Exceeding 5.5V damages chip.

Gain: Float for 9dB default. Use pull‑up/down for other gains.

Shutdown: Tie SD to GND for normal operation.

Versions: With pins = ready to use; Without pins = solder your own headers. Common Questions With pins vs without pins? With pins: pre‑soldered, ready to use. Without pins: unsoldered, cheaper – solder your own headers.

No MCLK needed? Yes – internal PLL recovers clock from BCLK.

Can it drive headphones? Not recommended – designed for speakers.

No sound?

1.Check power (2.5-5.5V)

2.Verify I2S connections (DIN, BCLK, LRC)

3.Ensure SD pin is grounded

4.Check speaker connection

What I2S formats? Standard I2S, left‑justified, right‑justified – auto‑configures. Specifications Chip: MAX98357 / MAX98357A

Output Power: 3.2W (4Ω, 10% THD) / 1.8W (8Ω, 10% THD)

Class: D (filterless)

Input: I2S (8kHz – 96kHz)

MCLK Required: No

Gain Options: 3/6/9/12/15dB (default 9dB)

Voltage: DC 2.5V – 5.5V

Protections: Thermal, overcurrent

Interface: 7-pin (VCC, GND, DIN, BCLK, LRC, GAIN, SD)

Dimensions: 22×18×3mm

Compatible: Raspberry Pi, Arduino, ESP32, STM32 (I2S output) Note: Manual measurement, allow 1‑3mm error. Colors may vary.

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