SPECIFICATIONS

Brand Name: NONE

Condition: New

High-concerned chemical: none

Origin: Mainland China

Type: Module

Graphic details

This sensor is a high performance, low power, digital output, omnidirectional MEMS microphone with bottom port. Compatible with INMP441.

Consists of a MEMS sensor, signal composition modulation, analog-to-digital converter, anti-aliasing filter, power management and industry standard 24-bit I2S interface. The I2S interface allows it to connect directly to digital processors such as DSPS and microcontrollers without the use of audio codecs used in the system. With a high signal-to-noise ratio, it is an excellent choice for near-field applications. With flat broadband frequency response, resulting in natural sound with high definition.

Main features:

Digital I2S interface with high precision 24-bit data

High SNR of 61 dBA

High sensitivity -26 dBFS

Stable frequency response from 60 Hz to 15 kHz

Low power consumption: Low current consumption of 1.4 mA

High PSR: -72 dBFS

Interface definition:

SCK: Serial data clock for the I2S interface

WS: Serial data word selection for the I2S interface

L/R: Left/right channel selection:

Set to low power level, the microphone outputs a signal in the left channel of the I2S frame.

Set to high power level, the microphone outputs a signal in the right channel.

SD: Serial data output for the I2S interface

VCC: Input power, 1.6V to 3.6V

GND: Power source

Connect to ESP32 development board:

This module - ESP32 development board

SCK   -- GPIO14

SD     -- GPIO32

WS    -- GPIO15

L/R    -- GND

GND    -- GND

VDD -- VDD3.3