Product Introduction: The INMP441 is a high-performance, low-power, digital-output, omnidirectional MEMS microphone with bottom port. The complete INMP441 solution includes a MEMS sensor, signal conditioning circuitry, analog-to-digital converter, anti-aliasing filter, power management, and an industry-standard 24-bit I²S interface. The I²S interface enables direct connection to digital processors such as DSPs and microcontrollers without requiring an external audio codec. The INMP441 offers a high signal-to-noise ratio and is well-suited for near-field applications. It features a flat wideband frequency response, delivering high-definition, natural sound reproduction. Product Features: - Digital I²S interface with 24-bit data resolution - Signal-to-noise ratio: 61 dBA - Sensitivity: –26 dBFS - Frequency response: 60 Hz to 15 kHz - Supply current: 1.4 mA - Power supply rejection: –75 dBFS Interface Definitions: - SCK: Serial clock input for I²S interface - WS: Word select input for I²S interface (left/right channel selection) - SD: Serial data output - VCC: Power supply input (1.8 V to 3.3 V) - GND: Ground Connection to ESP32: - SCK → GPIO14 - SD → GPIO32 - WS → GPIO15 - L/R → GND - GND → GND - VDD → VDD3.3 Color: Black Material: ABS Package Contents: 5 × Omnidirectional Microphone Module