Infineon Expands XENSIV™ MEMS Microphone Portfolio with Two New Digital PDM Devices

Infineon Technologies AG has introduced two advanced digital PDM microphones, the IM72D128V and IM69D129F, further strengthening its XENSIV™ MEMS microphone lineup. Designed for superior audio quality, energy efficiency, and durability, both models feature Infineon’s proprietary Sealed Dual Membrane (SDM) technology, achieving IP57-rated water and dust resistance, making them well-suited for demanding environments.

The IM72D128V delivers a best-in-class 71.5 dB(A) signal-to-noise ratio (SNR), enabling precise, low-noise audio capture. With an ultra-low power consumption of 430 µA in high-performance mode and 160 µA in low-power mode, it is an excellent fit for premium, battery-powered devices such as high-end headsets. Despite its compact 4 x 3 x 1.2 mm³ form factor, the microphone is optimized for space-constrained consumer applications.

Tailored for even more compact designs, the IM69D129F measures only 3.5 x 2.65 x 0.98 mm³ and achieves a 69 dB(A) SNR while maintaining low power consumption (450 µA in high-performance mode, 170 µA in low-power mode). Its small size makes it ideal for multi-microphone configurations in portable electronics such as ANC headsets, earbuds, laptops, tablets, conferencing systems, and cameras.

Both microphones combine excellent audio fidelity, low power usage, and high durability, supporting a wide range of applications including smart speakers, automotive infotainment, IoT devices, voice user interfaces (VUI) in home and industrial automation, as well as monitoring systems for security and industry.

Key shared features include:

• Integrated low-noise preamplifier and Σ-Δ ADC for digital PDM output.

• 11 Hz flat frequency response for precise sound reproduction.

• ±1 dB sensitivity tolerance, ensuring consistent performance in multi-microphone arrays.

Engineered to withstand harsh conditions while delivering reliable audio capture, the IM72D128V and IM69D129F comply with IEC (60747, 60749) and JEDEC (47/20/22) standards, ensuring long-term reliability for both consumer and industrial use.