MEMS microphones for consumer - Infineon Technologies

Overview

High performance analog and digital XENSIV™ MEMS microphones for consumer electronics

Infineon’s XENSIV™ MEMS microphones are designed for capturing audio signals with unprecedented precision and quality. The microphones are comprised of Infineon’s MEMS microphone chips and ASICs which are not without reason the world’s best-selling microphone components.

Infineon owns all building blocks of MEMS microphones allowing to develop MEMS, ASIC and package combinations which achieve the best possible performance and are optimized to each application.

XENSIV™ MEMS microphones feature ultra-low self-noise (high SNR), extremely low distortions (THD) even at high sound pressure levels (SPL), very tight part-to-part phase and sensitivity matching, a flat frequency response with a low LFRO (low frequency roll-off) and an ultra-low group delay. Combined with selectable power modes and their very small package size, Infineon XENSIV™ MEMS microphones are a perfect match for consumer electronics with excellent audio capturing functionalities and also for selected industrial applications such as predictive maintenance and security.

Learn more about MEMS microphones in driving sustainable consumer electronics

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Highlights

Details

Key features of XENSIV™ MEMS microphones

Infineon XENSIV™ MEMS microphones shape the industry on the technology level

MEMS microphones use an electrically charged backplate and a membrane to form a capacitive sound transducer. The flexible membrane moves proportional to the amplitude and frequency of incoming sound waves. The resulting change in voltage is measured, processed and output by an integrated analog or digital ASIC. Infineon distinguishes two main MEMS technologies:

Single Backplate

Single backplate technology (SBP) represents an industry standard for mid-end microphones with its simplicity and robustness. The SBP technology offers the best performance to cost ratio especially for small package sizes and SNR values up to 69dB SNR.

Sealed Dual Membrane

Sealed Dual Membrane (SDM) is Infineon’s revolutionary MEMS microphone technology that utilizes two membranes and a charged stator to create a sealed low-pressure cavity and a differential output signal. The architecture enables ultra-high SNR (up to 75dBSNR) and very low distortions and delivers high ingress protection (IP57) at a microphone level. If you are looking for the best in class acoustic performance in medium and larger packages – SDM is technology of your choice.

Typical applications and use-cases

Typical applications

Typical use-cases

TWS earbuds
ANC headphones
Smart speakers
Conference Speakers
Laptops / Tablets
Wearables
AR/VR devices

Studio quality audio capturing for communication devices
Low latency wide band audio signal capturing for Active Noise Cancellation (ANC) and transparent hearing functionality
Battery and size constraint devices
Multi-microphone (array) based beamforming and source separation for audio zoom features and multi user audio capturing
High range, far field voice pickup for multi room applications
Capturing of audio signals in loud environments
Audio pattern detection for predictive maintenance and security