STMicroelectronics STEVAL-MIC003V1 Daughterboard is designed to be used in conjunction with the X-NUCLEO-CCA02M1 expansion board. This daughterboard features 4 x IMP34DT05 top port digital MEMS microphone and PDM single bit output. The STEVAL-MIC003V1 daughterboard includes omnidirectional sensitivity and 122.5dBSPL acoustic overload point. This daughterboard operates at 1.6V to 3.2V supply voltage range.