• INMP441 Omnidirectional MEMS Microphone Module with yellow headers, side view showing pre-soldered pins.
  • Bottom view of INMP441 Microphone Module showing PCB pin definitions: SCK, WS, L/R, SD, VDD, GND.
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INMP441 Omnidirectional MEMS Microphone Module - I2S Interface

INMP441 Omnidirectional MEMS Microphone Module - I2S Interface

HK$25.00
HK$25.00
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Delivery Options

  • Local delivery within Hong Kong and in-store pickup.​
  • Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.​
  • Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).​
  • Estimated delivery time: 1–3 business days after dispatch (Hong Kong).​
  • In-store pickup details (location and time) will be confirmed by email or phone message.​
  • Delivery times are estimates and may be affected by weather or unforeseen circumstances.​

Capture High-Fidelity Audio with Precision

The INMP441 is a high-performance, low-power, omnidirectional MEMS microphone designed for digital audio applications. Unlike traditional analog microphones, the INMP441 features a built-in 24-bit I2S interface, allowing it to connect directly to digital processors like the ESP32, DSPs, or microcontrollers without needing an external audio codec.

With its compact circular design (approx. 1.5cm diameter) and pre-soldered headers, this module is perfect for near-field audio recording, voice recognition projects, and DIY smart home devices.

Key Features:

  • Digital Clarity: Industry-standard 24-bit I2S interface for direct digital output.
  • High Performance: Excellent Signal-to-Noise Ratio (SNR) of 61 dBA and high sensitivity (-26 dBFS).
  • Broadband Response: Flat frequency response from 60 Hz to 15 kHz ensures natural, high-definition sound.
  • Low Power: Extremely low current consumption (1.4mA), ideal for battery-operated devices.
  • Bottom Port Design: Omnidirectional pickup pattern for consistent audio capture from all directions.

Technical Specifications:

  • Input Voltage (VCC): 1.8V to 3.3V
  • Interface: I2S (Inter-IC Sound)
  • PSR: -75 dBFS
  • Dimensions: Diameter ~1.5cm

Pin Definition & Wiring Guide:

Pin Name Function
SCK Serial Clock Serial data clock for the I2S interface.
WS Word Select Selection for I2S interface (Left/Right clock).
L/R Channel Select

Low (GND): Left Channel output.


High (VDD): Right Channel output.
SD Serial Data Digital audio data output.
VCC Power Input power (1.8V - 3.3V).
GND Ground Common ground.

ESP32 Connection Tutorial:

Get started quickly with your ESP32 development board:

  • SCK → GPIO 14
  • WS → GPIO 15
  • SD → GPIO 32
  • L/R → GND (for Left Channel)
  • GND → GND
  • VDD → 3.3V
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