Product Introduction
The INMP441 is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. The complete INMP441 solution consists of a MEMS sensor, signal conditioning, analog-to-digital converter, anti-aliasing filter, power management and an industry standard 24-bit I2S interface. The I2S interface allows the INMP441 to connect directly to digital processors such as DSPs and microcontrollers, eliminating the need for an audio codec 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 broadband frequency response, resulting in natural sound with high clarity.
Product Features
1. Digital I2S interface with high-precision 24-bit data
2. High signal-to-noise ratio of 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 select for I2S interface
L/R: Left/right channel select.
When set to low level, the microphone outputs the signal on the left channel of the I2S frame.
When set to high level, the microphone outputs the signal on the right channel
SD: Serial data output for I2S interface.
VCC: Input power supply, 1.8V to 3.3V.
GND: Power ground
This product provides tutorials for using ESP32 modules with I2S function
Connect to our ESP32 development board:
INMP441 ESP32 development board
SCK >> GPIO14
SD >> GPIO32
WS >> GPIO15
L/R >> GND
GND >> GND
VDD >> VDD3.3
Actual image of the product
Company Information
