Infineon’s new PDM microphone offers low power consumption in a small package

Infineon is introducing the latest addition to the XENSIV MEMS microphone product portfolio, the low power digital microphone IM69D128S.

The microphone is designed for applications that require high signal-to-noise ratio (SNR) / low microphone self-noise, long battery life and high reliability. The unmatched SNR of 69dB(A) is claimed to enable a crystal-clear audio experience without compromising on battery life. 

Based on an advanced digital microphone ASIC, the IM69D128S sets a new benchmark in current consumption: 520microA. The company claimed this equals half the consumption of available models on the market with a similar performance. Additionally, IM69D128S can switch between different power and performance profiles without any audible artifacts, that is glitches the user can hear. The PDM (pulse density modulation) microphone is based on Infineon’s latest sealed dual membrane MEMS technology, which delivers high ingress protection (IP57) at the microphone level.

Due to its low power consumption, IM69D128S is suitable for hearable applications such as true wireless earbuds, over-ear headsets and hearing enhancement devices where battery life is key. Additionally, small size and high performance enable other space-critical applications such as wearables, smartphone and IoT devices.

For the third consecutive year, Infineon Technologies has successfully defended its market-leading position as MEMS microphone supplier. Infineon’s market share rose to 45 per cent as bare die microphone manufacturer in 2021 (MEMS microphone die supplier market shares. Source: Omdia, MEMS Microphone Report, October 2022), according to recent research published by technology expert Omdia. This development is due to Infineon’s long-term experience in MEMS microphone design and high-volume manufacturing.

Infineon´s MEMS microphone development strategy includes the main building blocks MEMS, ASIC and package for this sensor family. For this reason, Infineon has full ownership of performance, quality, and technology innovation of its products.

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