Product Features

1. Digital I2S interface with high precision 24-bit data
2. High signal to noise ratio is 61 dBA
3. High sensitivity - 26 dBFS
4. Stable frequency response from 60 Hz to 15 kHz
5. Low power consumption: low current consumption 1.4 mA
6. High PSR: -75 dBFS

Interface definition

• SCK: Serial data clock for I2S interface
• WS: Serial data word selection for I2S interface
• L/R: Left/Right channel selection.
  • When set to low, the microphone outputs a signal on the left channel of the I2S frame.
  • When set to high level, the microphone outputs signals on the right channel
• SD: Serial data output of the I2S interface.
• VCC: Input power, 1.8V to 3.3V.
• GND: power ground

Connect to ESP32

This product provides tutorials for using ESP32 modules with I2S functionality.

• INMP441 >> ESP32
• SCK >> GPIO14
• SD >> GPIO32
• WS >> GPIO15
• L/R >> GND
• GND >> GND
• VDD >> VDD3.3