Ultra-low power digital PDM XENSIV™ MEMS microphone Discover the IM68D128B – an ultra-low power digital XENSIV™ MEMS microphone, designed for applications which require long battery life and environmental robustness in a small package. With a Signal-to-noise ratio (SNR) of 67.5dB(A) and low corner frequency of 20Hz the microphone enables a clear audio experience without compromising on battery life. Enabled by a revolutionary digital microphone ASIC, the IM68D128B balances performance in a small package at a low current consumption of 580μA.