INMP441 I2S Digital Microphone Module Omnidirectional MEMS Mic Low Noise High Precision for Arduino – KSH 700 at HIMASTORES Mombasa – best electronics in Kenya
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INMP441 I2S Digital Microphone Module Omnidirectional MEMS Mic Low Noise High Precision for Arduino

SKU: HMJ154 Category: Sensors
KSH 700.00
In Stock

Product Description

INMP441 I2S Digital MEMS Microphone Module

High-Precision Omnidirectional MEMS Mic for Arduino and ESP32 Projects

The INMP441 is a highperformance, lowpower digital MEMS microphone with an omnidirectional pickup pattern and an I2S interface. It provides crystalclear audio capture with a 24bit data output, making it an excellent choice for near-field applications, voice recognition, wearables, and IoT projects [citation:1][citation:3][citation:4].

High SNR & Low Noise 61 dBA signalto-noise ratio ensures clear audio capture even in challenging environments [citation:1][citation:4][citation:8].
Digital I2S Interface - Directly connects to digital processors like ESP32, STM32, and DSPs without needing an audio codec [citation:3][citation:7][citation:9].
Operating voltage: 1.8V to 3.3V [citation:3][citation:7][citation:10].
Current consumption: 1.4mA (at 1.8V) to 2.2mA (at 3.3V) [citation:1][citation:7][citation:10].
For highquality audio recording and processing (24bit, up to 48kHz), the INMP441 is significantly better than analogue microphone modules [citation:9].

Technical Specifications

ParameterValue
Sensitivity-26 dBFS ±3 dBFS at 1kHz, 94dB SPL [citation:1][citation:10]
SNR61 dBA (A-weighted) [citation:1][citation:4][citation:8]
Frequency Response60 Hz to 15 kHz [citation:4][citation:7][citation:8]
THD≤3% at 105dB SPL [citation:1][citation:10]
Acoustic Overload Point120 dB SPL at 10% THD [citation:1][citation:10]
Package Size4.72 x 3.76 x 1.00 mm [citation:1][citation:6]
Temperature Range-40°C to +85°C [citation:1][citation:10]

= Pin Configuration =

PinFunctionDescription
VDDPower Supply1.8V to 3.3V [citation:3][citation:7]
GNDGroundPower ground [citation:3][citation:7]
SCKSerial Data ClockI2S bit clock input [citation:3][citation:7]
WSWord SelectI2S frame clock (LRCLK) [citation:3][citation:7]
SDSerial DataI2S data output [citation:3][citation:7]
L/RLeft/Right SelectGND Left channel, VDD Right channel [citation:3][citation:7]

= Connection Guide (ESP32) =

INMP441 PinESP32 PinESP32-S3 Pin
VDD3.3V3.3V
GNDGNDGND
WSGPIO 15GPIO 40 [citation:2][citation:11]
SCKGPIO 14GPIO 41 [citation:2][citation:11]
SDGPIO 32GPIO 39 [citation:2][citation:9][citation:11]
L/RGND (Left) or 3.3V (Right)GND (Left) or 3.3V (Right) [citation:3][citation:7][citation:9]

> In ESP32 Arduino code, use the I2S driver in receive mode (I2SPHILIPSMODE) [citation:9][citation:12].

For dual-microphone setups, the WS and SCK lines can be shared, but each mic needs its own unique SD pin [citation:2].

Applications

  1. Voice recognition and wake-word detection [citation:11].
  2. High-quality audio recording for projects [citation:9].
  3. Wearable and IoT devices [citation:1][citation:3].
  4. Sound direction finding (using dual mics) [citation:2].
  5. Drones and mobile devices [citation:1][citation:6].
HighPerformance Mic Superior audio quality and low power, perfect for advanced audio projects.
Easy Integration - Direct digital I2S connection for modern microcontrollers [citation:3][citation:9].

√ Compatible with ESP32, ESP32S3, STM32, and other I2Scapable MCUs [citation:2][citation:5][citation:9].

√ Excellent for nearfield and noisesensitive applications [citation:3][citation:7].