This data sheet introduces the features and characteristics of the ADMP441 microphone, including digital I²S interface, high precision 24-bit data, high SNR, high sensitivity, flat frequency response, low power consumption, high PSR and small size.
The ADMP441 is an omnidirectional MEMS microphone with a bottom port and a digital I²S interface. It delivers a high signal‑to‑noise ratio of 61 dBA, low current consumption (1.4 mA at 1.8 V), and a flat frequency response from 60 Hz to 15 kHz, making it suitable for teleconferencing, gaming, mobile devices, laptops, tablets, and security systems.
The datasheet provides full specifications, pin configuration, timing diagrams, power‑management modes, absolute maximum ratings, and recommended soldering profiles. It also includes typical performance curves, digital input/output characteristics, and guidelines for using the microphone in stereo applications.
| Signal‑to‑Noise Ratio (SNR) | 61 dBA |
|---|---|
| Equivalent Input Noise (EIN) | 33 dBA SPL |
| Dynamic Range | 87 dB |
| Frequency Response (low) | 60 Hz (-3 dB point) |
| Frequency Response (high) | 15 kHz (-3 dB point) |
| Total Harmonic Distortion (THD) | 3 % |
| Supply Voltage | 1.8 V to 3.3 V |
| Supply Current (Normal Mode, 1.8 V) | 1.4 mA |
| Supply Current (Normal Mode, 3.3 V) | 2.2 mA |
| Maximum Acoustic Input | 120 dB SPL |
The ADMP441 draws 1.4 mA in normal mode when powered at 1.8 V.
The device can tolerate acoustic peaks up to 120 dB SPL.
It provides a flat response from 60 Hz to 15 kHz.
The microphone achieves a 61 dBA SNR over a 20 kHz bandwidth.