New Product Introduction

STMicroelectronics IMP34DT05

IMP34DT05 - MEMS audio sensor omnidirectional digital microphone for industrial applications

STMicroelectrtincs IMP34DT05 product image

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.

Key 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 
  • SMD-compliant


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


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