MEMS audio sensor omnidirectional stereo digital microphone

The MP34DT01 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 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.

The MP34DT01 has an acoustic overload point of 120 dBSPL with a 63 dB signal-to-noise ratio and –26 dBFS sensitivity.

The MP34DT01 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
  • 120 dBSPL acoustic overload point
  • 63 dB signal-to-noise ratio
  • Omnidirectional sensitivity
  • –26 dBFS sensitivity
  • PDM output
  • HCLGA package
    • Top-port design
    • SMD-compliant
    • EMI-shielded
    • ECOPACK® , RoHS, and “Green” compliant



Description Version Size
DS8697 DS8697: MEMS audio sensor omnidirectional digital microphone 12.0 636 KB
Description Version Size
AN4041 AN4041: APWlink+ microphone USB demonstration boards based on the MP34DT01, MP45DT02, or MP34DB01 2.1 1 MB
AN4227 AN4227: Audio hub demonstration kit supporting the M45DT02, MP34DB01, and MP34DT01 microphones 1.0 1 MB
AN4428 AN4428: Best practices in the manufacturing process of MEMS microphones 1.1 1 MB
AN4427 AN4427: Gasket design for optimal acoustic performance in MEMS microphones 1.1 1 MB
AN4211 AN4211: Guidelines for soldering MEMS microphones 4.0 688 KB
AN4184 AN4184: Microphone coupon boards STEVAL-MKI129Vx /MKI155Vx based on digital microphones 2.0 1 MB
AN4146 AN4146: STSmartVoice demonstration board STEVAL-MKI126Vx 2.0 3 MB
AN4426 AN4426: Tutorial for MEMS microphones 1.1 1009 KB


Description Version Size
Health and Wellness Mobility Cloud computing 1 MB
ST offering in Wearable - Analog and Mixed Signal Portfolio 3.0 1 MB


Description Version Size
APWorkbench software for audio ICs and MEMS microphones 1.0 2 MB
MEMS analog and digital microphones 989 KB
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Product Evaluation Tools


型号 Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
MP34DT01TR HLGA4 4x3x1 Tape And Reel Active - - NEC EAR99 - MORE INFO 获取样片 Add to cart DISTRIBUTOR AVAILABILITY

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors


型号 Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
MP34DT01TR ActiveHLGA4 4x3x1IndustrialEcopack3 0 0

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.