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STMicroelectronics MP34DB02 stereo digital microphone

The MP34DB02 is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface with stereo operation capability.

STMicroelectronics-MP34DB02-product-picture

The MP34DB02 is an ultra-compact, low-power, omnidirectional, digital MEMS microphone built with a capacitive sensing element and an IC interface with stereo operation capability.The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process dedicated to produce 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.

 

Key features

  • 62.6 dB signal-to-noise ratio
  • 120 dBSPL acoustic overload point
  • –26 dBFS sensitivity
  • RHLGA package

     

Additional features

  • ​Single supply voltage
  • Low power consumption
  • 120 dBSPL acoustic overload point
  • 62.6 dB signal-to-noise ratio
  • Omnidirectional sensitivity
  • –26 dBFS sensitivity
  • PDM single-bit output with option for stereo configuration
  • RHLGA package
    • Bottom-port design
    • SMD-compliant
    • EMI-shielded
    • ECOPACK® , RoHS and “Green” compliant

 

Applications

  • Mobile terminals
  • Laptop and notebook computers
  • Portable media players
  • VoIP


STEVAL-MKI155V2 

Microphone coupon board based on the MP34DB02 digital MEMS microphone

The STEVAL-MKI155V2 board is a daughterboard to be used with the STEVAL-MKI126Vx (Smart Voice) kit, containing 4 MP34DB02 digital MEMS microphones. The coupon concept allows easy performance testing of ST MEMS microphones. When connected to the Smart Voice board, it is possible to detach the single PCBs hosting each microphone.

Key Features

  • 4 x MP34DB02 bottom port digital MEMS microphones
  • Functions as a daughterboard for use with STEVAL-MKI126Vx kit
  • V supply from 1.64 to 3.6 V
  • 120 dBSPL acoustic overload point
  • Omnidirectional sensitivity
  • PDM single-bit output
  • 62.6 dB of SNR
  • Sensitivity: -26 dBFS
  • RoHS compliant

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