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MEMS audio sensor high-performance analog bottom-port microphone
  • active Active

The MP23AB02B is a compact, low-power microphone built with a low-profile sensing element.

The sensing element, capable of detecting acoustic waves, is manufactured using a specialized silicon micromachining process to produce audio sensors.

The MP23AB02B has an acoustic overload point of 125 dBSPL with a 64dB signal-to-noise ratio.

The MP23AB02B 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.

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Errata Sheet
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Key Features

  • Single supply voltage operation
  • Low power consumption
  • Omnidirectional sensitivity
  • High signal-to-noise ratio
  • High bandwidth
  • Package compliant with reflow soldering

Design Resources


Technical Documentation

Product Specifications

Description Version Size
DS10256: MEMS audio sensor high-performance analog bottom-port microphone
3.0 520 KB

Application Notes

Description Version Size
AN4426: Tutorial for MEMS microphones
1.1 1,010 KB
AN4427: Gasket design for optimal acoustic performance in MEMS microphones
1.1 1,132 KB
AN4428: Best practices in the manufacturing process of MEMS microphones
1.1 1,027 KB

Presentations & Training Material


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

Publications and Collaterals


Description Version Size
APWorkbench software for audio ICs and MEMS microphones
2,349 KB
MEMS analog and digital microphones
1,669 KB

Sample & Buy

Part Number Marketing StatusPackagePacking TypeAutomotive GradeOrder From STUnit Price (US$)*
@ 1000
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
MP23AB02BActiveRHLGA 3.35*2.5 3LD METAL CAPTray_-1No availability reported, please contact our Sales officeEcopack2-
MP23AB02BTRActiveRHLGA 3.35*2.5 3LD METAL CAPTape And Reel_-1Distributor reported inventory date: 2014-10-25
Distributor NameRegionStockMin. order

(*) 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 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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