MP34DT06J MEMS Microphone STMicroelectronics MP34DT06J MEMS Microphone is an ultra-compact, low-power, omnidirectional, digital MEMS audio sensor built with a capacitive sensing element and an IC interface. This low-distortion digital microphone offers a 64dB Signal-to-Noise Ratio (SNR) and -26dBFS±1dB sensitivity. The capacitive sensing element of this microphone is capable of detecting acoustic waves and is manufactured using a specialized silicon micromachining process. The MP34DT06J microphone features an IC interface that is manufactured using a CMOS process to allow and provide digital signal externally in PDM format.