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MP34DB01

MEMS audio sensor omnidirectional digital microphone
  • active Active

The MP34DB01 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.

The MP34DB01 has an acoustic overload point of 120 dBSPL with a best on the market 62.6 dB signal-to-noise ratio and -26 dBFS sensitivity.

The MP34DB01 is available in a bottom-port, SMD-compliant, EMI-shielded package and is guaranteed to operate over an extended temperature range from -40 °C to +85 °C.

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Errata Sheet
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Datasheet

Key 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

Design Resources

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Technical Documentation

Product Specifications

Description Version Size
pdf
DS6940: MEMS audio sensor omnidirectional digital microphone
8.0 321 KB

Application Notes

Description Version Size
pdf
AN4041: APWlink+ microphone USB demonstration boards based on the MP34DT01, MP45DT02, or MP34DB01
2.1 1,032 KB
pdf
AN4146: STSmartVoice demonstration board STEVAL-MKI126Vx
2.0 3,511 KB
pdf
AN4184: Microphone coupon boards STEVAL-MKI129Vx /MKI155Vx based on digital microphones
2.0 1,264 KB
pdf
AN4211: Guidelines for soldering MEMS microphones
3.0 790 KB
pdf
AN4227: Audio hub demonstration kit supporting the M45DT02, MP34DB01, and MP34DT01 microphones
1.0 1,572 KB
pdf
AN4426: Tutorial for MEMS microphones
1.1 1,010 KB
pdf
AN4427: Gasket design for optimal acoustic performance in MEMS microphones
1.1 1,132 KB
pdf
AN4428: Best practices in the manufacturing process of MEMS microphones
1.1 1,027 KB

Presentations & Training Material

Presentations

Description Version Size
pdf
ST offering in Wearable - Analog and Mixed Signal Portfolio
1,508 KB

Related Tools and Software

Related Tools and Software

Part Number Description
STEVAL-MKI116V1 MEMS microphone demonstration board based on the MP34DB01 and STM32
STEVAL-MKI126V2 MEMS microphone evaluation board based on STA321MPL and MP34DB01 (microphone processor + digital uPhone MEMS)
STEVAL-MKI129V2 Microphone coupon board based on the MP34DB01 digital MEMS microphone
STEVAL-MKI138V2 STAudioHub USB interface board based on MP34DB01 and STM32

Publications and Collaterals

Flyer

Description Version Size
pdf
APWorkbench software for audio ICs and MEMS microphones
2,349 KB
pdf
MEMS analog and digital microphones
990 KB

Sample & Buy

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Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
MP34DB01ActiveRHLGA 4 3x4x1.0Tray_-Distributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
RUTRONIKOrder NowEUROPE19471
Ecopack2PDF
XML
MP34DB01TRActiveRHLGA 4 3x4x1.0Tape And Reel_Free SamplesDistributor reported inventory date: 2014-12-20
Distributor NameRegionStockMin. order
ARROWOrder NowAMERICA40004000
AVNETOrder NowAMERICA10000
P&SOrder NowASIA/PACIFIC501
ARROWOrder NowEUROPE80000
DIGIKEYOrder NowWORLDWIDE19801
MOUSEROrder NowWORLDWIDE9991
Ecopack2PDF
XML

(*) 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
(**) The Material Declaration forms available on st.com 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.
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