XENSIV IM73A135 MEMS for high-quality audio capture
Audio signal processing through refined frequency curve management
Features 73dB SNR, 135dBSPL, 170μA power consumption


Infineon unveiled the XENSIV™ IM73A135 analog MEMS microphone on the 8th.

Application designers consider high signal-to-noise ratio (SNR), compact package, high acoustic overload point (AOP), low power consumption, and factors such as MEMS (Micro Electro Mechanical System) or ECM (Electret Condenser Microphones) type before adopting a microphone.

Traditionally, applications requiring high-performance microphones adopted ECM instead of MEMS. The IM73A135 is a MEMS that replaces ECM, implementing high dynamic range with 73dB SNR, 135dBSPL (Sound Pressure Level), and a package size of 4×3×1.2㎣. It is effective for audio signal processing through refined frequency curve management and consumes only 170μA of current.

According to a July 2020 survey by Mordor Intelligence, the noise canceling headphone market is projected to grow at an annual average rate of 16% until 2025, with approximately 250 million units expected to ship. The IM73A135 MEMS microphone enhances active noise canceling functionality, and with its low self-noise, it is suitable for high-quality audio capture required in conference systems, cameras, or audio recorders.

The IM73A135 XENSIV MEMS microphone is scheduled to be supplied from March 2021. According to an October 2020 survey by Omdia, Infineon ranked first in the MEMS market with a 43.5% market share, maintaining a 4% gap with second place and over 37% with third place.

Meanwhile, Infineon is also developing a low-power digital ASIC microphone business. The technology is used in various next-generation digital microphones produced and branded in the 'Infineon-inside' microphone partner network. Additionally, with low-power mode current consumption of only 110µA, it is suitable for wearable applications including smartwatches and fitness bands.

According to Infineon's own research, the market is projected to grow at close to 20% annually until 2025, with approximately 650 million units expected to ship.