I2S Microphone Module

The I2S microphone module from DFRobot carries the omnidirectional MEMS microphone MSM261S4030H0 with digital I2S output (24 bit). Converter, filter and I2S interface sit in the microphone, so no audio codec is needed: the signal goes directly to a microcontroller with I2S such as the ESP32 or the K210. The round module runs on 1.8 to 3.3 V.

Recommended Accessories:

• Dupont Jumper Cable Set 20cm 60 Pieces.

Features:

• Digital I2S interface with 24 bit, no audio codec needed
• Omnidirectional, sound inlet at the bottom (bottom port)
• Signal-to-noise ratio 61 dBA, sensitivity -26 dBFS
• Frequency response 60 Hz to 15 kHz
• Current consumption 1.4 mA
• Pin L/R selects the channel: LOW left, HIGH right channel in the I2S frame

Application Examples:

• Voice recording and speech recognition with ESP32
• Noise and volume measurement
• Audio input for AI boards with K210

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: SEN0327
• Microphone: MSM261S4030H0, MEMS
• Polar pattern: omnidirectional
• Interface: I2S, 24 bit
• Operating voltage: 1.8 to 3.3 V
• Current consumption: 1.4 mA
• Sensitivity: -26 dBFS
• Signal-to-noise ratio: 61 dBA
• Frequency response: 60 Hz to 15 kHz
• PSR: -75 dBFS
• Maximum sound pressure: 140 dB SPL
• Pins: SCK, WS, L/R, SD, VDD, GND
• Operating temperature: -30 °C to 85 °C
• Dimensions: round, diameter about 14 mm
• Weight: 2 g

Scope of Delivery:

• 1× I2S Microphone Module