INMP441 VOICE MODULE

High‑Performance MEMS Microphone Module – INMP441

The INMP441 is a compact stereo MEMS microphone integration pack designed for precise acoustic capture in voice‑enabled electronics. With its built‑in pre‑amplifier and CMOS‑compatible biasing, the module delivers low‑noise, high‑dynamic‑range audio suitable for consumer audio, home automation, and industrial control systems. Its low power requirement (1.8 V supply, 15 mA) and small footprint make it ideal for battery‑operated devices and space‑constrained PCB layouts.

Featuring an analog output with a flat frequency response from 87 Hz to 20 kHz and an SNR of 66 dB, the INMP441 achieves clear voice reproduction while rejecting ambient noise. The integrated impedance matching automatically calibrates to the audio driver, simplifying board design and improving overall system fidelity.

• Key Spec 1: 2 × 0.025 V/Pa acoustic sensitivity with 66 dB SNR
• Key Spec 2: 35‑dB SPL range with 120 dB dynamic headroom
• Key Spec 3: CMOS‑compatible supply 1.8 V; max 15 mA current draw
• Common Use Case: Voice command modules for smart speakers, smartphones, and industrial HMI panels