IM69D128S | Ultra-low power digital XENSIV™ MEMS microphone

Overview

Discover the IM69D128S – an ultra-low power digital XENSIV^TM MEMS microphone, designed for applications which require high SNR (low self-noise), long battery life, and high reliability.

Great signal-to-noise ratio (SNR) of 69 dB(A) enables crystal clear audio experience without compromising on battery life. Enabled by a revolutionary digital microphone ASIC, the IM69D128S sets a new benchmark by cutting current consumption to 520 μA – almost the half of what models with similar performance on the market can offer. Additionally, IM69D128S masters the art of switching between different power & performance profiles without any audible artifacts, i.e. glitches that the user can hear. This microphone is based on Infineon’s new Sealed Dual Membrane MEMS technology which delivers high ingress protection (IP57) at a microphone level.

Summary of Features

Very low self-noise / high SNR of 69dB(A)
Ultra-low current consumption: 520 μA in high performance profile; 420 μA in power saving profile; 180 μA in low power mode
Sealed Dual Membrane (SDM) technology with IP57 ingress protection at microphone level
Very high dynamic range and acoustic overload point (AOP) of 128dBSPL
Very tight part-to-part phase and sensitivity matching (± 1dB)
Flat frequency response with an LFRO (low frequency roll-off) of 30Hz
Small package size of 3.5*2.65*0.98 mm

Benefits

Substantial battery saving without compromising on acoustic performance
Crystal clear audio signals even for highest sound pressure levels
Enablement of advanced audio features (ANC, transparent hearing, audio zoom, beamforming)
PCB area savings for space-critical applications

Potential Applications