INMP441 Omnidirectional Microphone I2S Interface Module

The INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. The The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog to digital converter, anti-aliasing filter, power management and industry standard 24-bit I2S interface. The I2S interface allows the INMP441 to be directly connected to digital processors such as DSPs and microcontrollers without the need for an audio codec for use in the system. The INMP441 has a high signal-to-noise ratio and is an excellent choice for near field applications. The INMP441 has a flat wideband frequency response that results in high definition of natural sound.

Specifications
Input Voltage: 1.8V to 3.3V
Low current consumption 1.4 mA
Stable frequency response from 60 Hz to 15 kHz
High PSR: -75 dBFS
High sensitivity - 26 dBFS
High signal to noise ratio is 61 dBA
Digital I2S interface with high precision 24-bit data

Connect to ESP32:  INMP441 ESP32
SCK to GPIO14
SD to GPIO32
WS to GPIO15
L/R to GND
GND to GND
VDD to VDD3.3