# MAX98357 I2S Amplifier Module

**Type:** Product page · **SKU:** DFR0954 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/max98357-i2s-amplifier-module.html ([markdown](https://core-electronics.com.au/max98357-i2s-amplifier-module.html.md))

This I2S digital amplifier based on the MAX98357 I2S Class D amplifier module works great with microcontrollers with I2S audio outputs like ESP32 and can...

## Pricing

- **Price:** $10.15 (inc GST) — $9.23 AUD, exc GST
- **Quantity discounts:** 6+ $8.76 (exc GST) · 12+ $8.40 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 19 today, and up to 450 more in 8–12 days.

## Description

This I2S digital amplifier **based on the MAX98357 I2S Class D amplifier module works great with microcontrollers with I2S audio outputs like ESP32** and can be applied to projects like IoT nodes, smart home devices, Bluetooth audio players, and so on.

The module supports a 3.3V-5V power supply. And it can output over 2.5W of power when driven by 5V and a 4O speaker. Besides, it allows users to set different modes (off, left channel, right channel, and mixed) by changing the resistance on the SD port. The product defaults to mixed mode.

Featuring a small size, this I2S amplifier comes with stamp holes that enable it to be directly plugged into or mounted on a PCB and breadboard. Also, it is designed with PH2.0 and stamp holes for connecting speakers, flexible, and convenient to use.

![MAX98357 I2S Amplifier Module](https://core-electronics.com.au/attachments/localcontent/1_50825ee6f63.jpg)

### Features

- MAX98357 I2S digital Class D amplifier, power >2.5W
- 3.3V~5V voltage power supply
- Switchable sound channel
- Adjustable gain
- Stamp holes design, support SMT and DIP
- Two ways to connect a speaker: PH2.0 and stamp holes
 
### Applications

- Bluetooth Audio Player
- IoT Node Audio Player
- Smart Home Voice Interaction
- Robotic Device Audio Player
 
### Specification

- Module Parameters
- MCU: MAX98357A
- Operating Voltage: DC 3.3V~5V
- Output Power: 8O 1.8W / 4O 2.5W (at 12db)
- Output Channel: single channel
- Communication Interface: I2S interface
- Operating Temperature: -40°C - +80°C
- Storage Temperature: -40°C - +80°C
- Dimension (Without Packaging): 18mm × 18mm/ 0.059 × 0.059
- Sample Rate: 8kHz~96kHz
- THD: 
    - 0.02% (f = 1kHz, POUT = 1W, TA = +25NC, ZSPK = 4I + 33FH, TQFN)
    - 0.013% (f = 1kHz, POUT = 0.5W, TA = +25NC, ZSPK = 8I + 68FH)
- Dynamic Range: 105DB (A-weighted, VRMS = 2.54V, 24- or 32-bit data)
- Output Noise: 25FVRMS (A-weighted, 24- or 32-bit data (Note 4))
- Gain (relative to the reference level of 2.1dBV): 
    - GAIN\_SLOT = GND through 100kO: Min 14.4dB, Typical 15dB, Max 15.6dB
    - GAIN\_SLOT = GND: Min 11.4dB, Typical 12dB, Max 12.6dB
    - GAIN\_SLOT = unconnected: Min 8.4dB, Typical 9dB, Max 9.6dB
    - GAIN\_SLOT = VDD: Min 5.4dB, Typical 6dB, Max 6.6dB
    - GAIN\_SLOT = VDD through 100kO: Min 2.4dB, Typical 3dB, Max 3.6dB
- Efficiency: 92% (ZSPK = 8I + 68FH, THD+N = 10%, f = 1kHz, gain = 12dB)
- DAC Gain Error: 1%
- Frequency Response: ±0.2dB
- Class D Switching Frequency: 330kHz
- Spread Spectrum Bandwidth: ±12.5kHz
 
### Documents

- [Product wiki](https://wiki.dfrobot.com/SKU_DFR0954_MAX98357_I2S_Amplifier_Module)
- [2D PDF Dimension](https://core-electronics.com.au/attachments/localcontent/7697624de663548e6e41a8d6aa79f04c_47195d5a170.pdf)
- [Schematics](https://core-electronics.com.au/attachments/localcontent/9d4e5e3d16530ea5b6ba8f1385fffc4d_12592795702.pdf)
- [MAX98357A Datasheet](https://core-electronics.com.au/attachments/localcontent/d75ded846393befb317bcf0dcce001e7_209703303b4.pdf)
 
### Parts List

- 1x MAX98357 I2S Amplifier Module

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/D/F/DFR0954-1.jpg)