Infineon has expanded its XENSIV MEMS microphone lineup with the introduction of the IM72D128V and IM69D129F, two innovative digital PDM microphones designed for exceptional audio performance, energy efficiency, and robustness. Leveraging Infineon’s proprietary Sealed Dual Membrane (SDM) technology, both microphones achieve a high level of robustness against water and dust (IP57), making them suitable for use in demanding environments.
The IM72D128V is distinguished by its top-tier Signal-to-Noise Ratio (SNR) of 71.5 dB(A), making it particularly suited for applications requiring precise low-noise audio pick-up. It operates at ultra-low power consumption, with 430 µA in high-performance mode and 160 µA in low-power mode, which makes it ideal for energy-efficient, battery-powered devices such as high-end headphones. With a footprint of 4 x 3 x 1.2 mm³, it is still small enough to fit most space constraint consumer devices.
The IM69D129F is tailored for compact design, with a footprint of 3.5 x 2.65 x 0.98 mm³, which makes it ideal for space-constrained devices. It achieves reliable audio performance with an SNR of 69 dB(A) and features low power consumption, operating at 450 µA in high-performance mode and 170 µA in low-power mode, contributing to extended battery life in portable devices ensuring extended battery life. Its small size makes it particularly suited for multi-microphone designs in compact systems. The devices can be used in Active Noise Cancellation (ANC) headphones and earbuds, as well as high-quality audio capturing in laptops, tablets, conference systems, and cameras.
The IM72D128V and IM69D129F also support Voice User Interface (VUI) applications in smart speakers, automotive infotainment, IoT devices, and home and industrial automation. Furthermore, both microphones can be used in industrial or home monitoring applications that require audio pattern detection, such as industrial monitoring and home security systems.
In addition, the IM72D128V and IM69D129F are equipped with a low-noise preamplifier and a sigma-delta ADC, providing digital PDM output for seamless integration into modern audio systems. Their shared features include an 11 Hz flat frequency response for precise sound reproduction and a ±1 dB sensitivity tolerance, making them ideal for multi-microphone arrays. Whether used for far-field audio pick-up or portable devices, these microphones enable high-quality audio capturing in challenging environments while enhancing energy efficiency and reliability. Both microphones comply with IEC (60747, 60749) and JEDEC (47/20/22) standards, ensuring reliability and robustness for consumer and industrial applications.
