3PCS Omnidirectional Microphone Module I2S Interface INMP441 MEMS High Precision Low Power Ultra Small Volume I2S Interface for ESP32
Amazon Price as of 02/23/2025 14:03 GMT+00:00
$8.99
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Product Description
Digital I2S interface with high precision 24-bit data
High signal to noise ratio is 61 dBA
High sensitivity - 26 dBFS
Stable frequency response from 60 Hz to 15 kHz
Low power consumption: low current consumption 1.4 mA
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
This product provides tutorials for using ESP32 modules with I2S functionality.
Connect to ESP32:
INMP441 ESP32
SCK >> GPIO14
SD >> GPIO32
WS >> GPIO15
L/R >> GND
GND >> GND
VDD >> VDD3.3
Package include:
3 x INMP441 omnidirectional microphone module
• 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 industry standard 24-bit I2S interface.
• The INMP441 has a flat wideband frequency response that results in high definition of natural sound.
• 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.
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