IM72D128 | Ultra-high performance XENSIV™ MEMS microphone with very high dynamic range

Overview

The IM72D128V01 is an ultra-high performance digital microphone designed for applications which require a very high SNR (low self-noise) and low distortions (high AOP). This microphone is based on Infineon’s new Sealed Dual Membrane MEMS technology which delivers high ingress protection (IP57) at a microphone level. The flat frequency response (20Hz low-frequency roll-off) and tight manufacturing tolerance improve performance of multi-microphone (array) applications. Different power modes can be selected in order to suit specific clock frequency and current consumption requirements.

Summary of Features

Ultra-low self-noise / ultra-high SNR (72dB)
Selectable power modes for battery critical applications (980/280µA)
Sealed Dual Membrane (SDM) technology with IP57 ingress protection at microphone level
Ultra-high dynamic range and high acoustic overload point (AOP) of 128dBSPL
Very tight part-to-part phase and sensitivity matching (± 1dB)
Flat frequency response with a very low LFRO (low frequency roll-off) of 20Hz
Very low group delay (7µs @ 1kHz)

Benefits

Crystal clear audio pick up of the quietest and the loudest sounds
High ingress protection (IP57) at a microphone level
Enablement of advanced audio features (ANC, transparent hearing, audio zoom, beamforming)

Potential Applications