I2S MEMS Microphone Breakout Board

The I2S MEMS Microphone Breakout Board is a compact and powerful digital microphone sensor specifically designed for use with microcontrollers like the ESP32. Compared to traditional analog microphones, this module offers low noise levels, high sensitivity, and excellent reliability. It is ideal for projects such as voice control, audio recordings, AI learning applications, Bluetooth audio transmission, and smart home audio systems. Thanks to its MEMS technology and omnidirectional functionality, the microphone captures sounds accurately from all directions. The sensor uses an I2S data output, which facilitates integration into modern digital systems. With the included Arduino library, you can quickly and easily implement projects with your ESP32. The compact surface-mount design allows seamless integration into various devices. Its high signal-to-noise ratio performance and ability to handle noise levels up to 140 dB make it ideal for demanding applications. The sensor is power-efficient, making it particularly attractive for IoT and portable devices.

Features:  

• The microphone uses MEMS technology, known for reliability and precision.  
• It offers an omnidirectional recording range, capturing sounds from all directions.  
• The I2S data output allows easy connection with modern microcontrollers.  
• The microphone supports noise levels up to 140 dB, making it versatile.  
• The signal-to-noise ratio is 59 dB, ensuring clear audio recordings.  
• The sensor requires an operating voltage of 3.3 V, making it energy-efficient.  
• Support for the Arduino library simplifies project implementation with the ESP32.  

Application Examples:  

• Integration into voice control systems for smart homes.  
• Audio recordings and streaming in IoT devices.  
• AI-based voice and sound recognition.  
• Bluetooth audio transmission in portable devices.  
• Prototyping of smart speakers and audio systems.

Pinout:

• 3V3: Power supply, + DC 3.3 V
• GND: Power supply, - Negative pole of the power supply
• SCK: I2S clock, Serial data clock for the I2S interface
• SEL: Selection of the left or right channel. At low level, the microphone outputs its signal on the left channel of the I²S frame, at high level on the right channel.
• WS: Data field selection, Selection of the data of the left or right channel, connection with WS of the I2S interface
• DO: Data output, Serial data output of the I2S microphone  

Documentation:  

• DFRobot Wiki

Specifications:  

• Manufacturer: DFRobot  
• Manufacturer SKU: SEN0526  
• Operating Voltage: 3.3 V DC  
• Technology: MEMS  
• Direction: Omnidirectional  
• Data Output: I2S  
• Maximum Noise Level: 140 dB  
• Signal-to-Noise Ratio: 59 dB  
• Dimension: 11 x 16 x 4mm  
• Weight: 6g  

Package Contents:  

• 1x I2S MEMS Microphone Breakout Board  
• 1x 6-Pin Header