STMicroelectronics IMP23ABSU MEMS Microphone

STMicroelectronics IMP23ABSU MEMS Microphone is a compact, low-power 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 to produce audio sensors. The IMP23ABSU has an acoustic overload point of 130dBSPL with a typical 64dB signal-to-noise ratio. The sensitivity of the IMP23ABSU is -38dBV ±1dB @ 94dBSPL, 1kHz. The STMicroelectronics IMP23ABSU is available in a package compliant with reflow soldering and is guaranteed to operate over an extended temperature range from -40°C to +85°C.


  • Single supply voltage operation 1.52V to 3.6V
  • Omnidirectional sensitivity
  • High signal-to-noise ratio
  • High acoustic overload point (130dBSPL typ.)
  • Package compliant with reflow soldering
  • Enhanced RF immunity
  • Ultra-flat frequency response
  • Ultrasound bandwidth (up to 80kHz)
  • Low latency
  • 150µA max. ultra-low-power
  • ECOPACK, RoHS, and "Green" compliant


  • Condition monitoring of industrial equipment
  • Leak detection
  • Electrical arcing
  • Smart medical instruments
  • Wearable devices
  • Hearables
  • Smart speakers
  • Active noise-canceling headsets

Acoustic & Electrical Characteristics

Chart - STMicroelectronics IMP23ABSU MEMS Microphone
Published: 2020-09-30 | Updated: 2023-07-18