INMP441 I²S MEMS Microphone Module (Omnidirectional 24-bit 1.8–3.3 V) – For ESP32/ESP8266

Compact digital MEMS microphone breakout using the INMP441 sensor (often listed as “NMP441”). Outputs 24-bit I²S audio at 1.8–3.3 V, pairs cleanly with ESP32/ESP8266 for voice detection, sound level logging, and audio experiments.

Features:

• Digital I²S interface (no external ADC) – up to 24-bit data.
• Omnidirectional bottom-port MEMS capsule.
• Sensitivity: −26 dBFS (typ). SNR: ~61 dBA.
• Supply: 1.8–3.3 V (3.3 V typical on ESP32 projects).
• Selectable L/R pad for stereo arrays and beamforming.

Technical Specifications:

Specifications (module).
Sensor IC: INMP441 (TDK InvenSense).
Interface: I²S (BCLK/SCK, LRCLK/WS, DOUT/SD).
Supply voltage (VDD): 1.62–3.63 V (spec), typical use 3.3 V.
Current: ~1.4 mA @1.8 V (typ.).
Sensitivity: −26 dBFS (typ).
SNR: 61 dBA (typ).
Frequency response (seller stated): ~60 Hz–15 kHz.
Port: Bottom (keep port unobstructed).

Package includes: 1x INMP441 I²S MEMS Microphone Module (omnidirectional).

*The image is for illustrative purposes only. Due to variations in camera settings, lighting, manufacturing processes, monitors, and supply, colours may differ. Product appearance and specifications are subject to change without notice.

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