MEMS audio sensor omnidirectional stereo digital microphone

The MP34DT04-C1 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 MP34DT04-C1 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 has an acoustic overload point of 120 dBSPL with a 64 dB signal-to-noise ratio and –26 dBFS sensitivity.

The MP34DT04-C1 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
  • 64 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


Technical Documentation

Product Specifications
Description Version Size
DS11865 DS11865: MEMS audio sensor omnidirectional digital microphone 2.0 628 KB
Application Notes
Description Version Size
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 2.0 840 KB
AN4426 AN4426: Tutorial for MEMS microphones 2.0 947 KB

Presentations & Training Material

Description Version Size
Health and Wellness Mobility Cloud computing 1 MB

Publications and Collaterals

Description Version Size
APWorkbench software for audio ICs and MEMS microphones 1.0 2 MB
MEMS analog and digital microphones 989 KB
Support & Community

Sample & Buy

Part Number Package Packing Type Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors

(*) 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

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
MP34DT04TR-C1 NRNDHLGA4 4x3x1-Ecopack3 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.