Description
The IMP34DT05 is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface. The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to producing audio sensors. The IC interface is manufactured using a CMOS process that allows designing a dedicated circuit able to provide a digital signal externally in PDM format. The IMP34DT05 is a low-distortion digital microphone with a 64 dB signal-to-noise ratio and –26 dBFS ±3 dB sensitivity. The IMP34DT05 is available in a top-port, SMD-compliant, EMI-shielded package and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C. Product status link IMP34DT05 Product summary

Features
■ Single supply voltage
■ Low power consumption
■ AOP = 122.5 dBSPL
■ 64 dB signal-to-noise ratio
■ Omnidirectional sensitivity
■ –26 dBFS ±3 dB sensitivity
■ PDM output
■ HCLGA package – Top-port design – SMD-compliant – EMI-shielded – ECOPACK, RoHS, and “Green” compliant

Applications
■ Anti-tampering devices
■ Vibration monitoring
■ Audio-activated functions
■ Predictive maintenance
■ Noise cancelling
■ Sound detection for alarm systems
■ Human / machine voice interface
■ Anti-theft systems