XENSIV™ MEMS Microphones Infineon XENSIV™ MEMS Microphones are designed for applications requiring low self-noise (high SNR), wide dynamic range, distortions below 1% at 128dBSPL, and a high acoustic overload point. The microphones have a 70dB signal-to-noise ratio (SNR). The XENSIV™ MEMS Microphones offer crystal clear audio signals, an extended pick-up distance and sensitivity to both soft and loud signals in applications.