STMicroelectronics MEMS Audio
Sensor Digital Microphones

STMicroelectronics MEMS Audio Sensor Digital Microphones are ultra-compact, low-power, omnidirectional devices 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 producing audio sensors. These devices have an acoustic overload point of 120 dBSPL with a best on the market 62.6 dB or 63 dB signal-to-noise ratio and -26 dBFS sensitivity. The MEMS Audio Sensor Digital Microphones comes in an SMD-compliant package and operates over an extended temperature range from -30ºC to +85ºC. This STMicroelectronics MEMS Audio Sensor Digital Microphones are ideal for use in a variety of applications, including mobile terminals and VoIP, laptop and notebook computers, and portable media players.

Features

Single supply voltage
Low power consumption
120 dBSPL acoustic overload point
62 dB SNR
-26 dBFS Sensitivity
Omnidirectional sensitivity
PDM single-bit output with option for stereo configuration
-30 to +85°C Temperature range
RHLGA package (SMD-compliant)
ECOPACK®, RoHS and "Green" compliant

Applications

Mobile terminals and VoIP
Laptop and notebook computers
Portable media players
Speech recognition
A/V eLearning devices
Digital still and video cameras
Gaming and virtual reality input devices
Antitheft systems

Part Number	Package	Packaging	Signal to-Noise Ratio	Datasheet
MP34DB01	RHLGA-4 3x4x1	Tray	62.6 dB
MP34DB01TR	RHLGA-4 3x4x1	Tape and Reel	62.6 dB
MP34DT01	HCLGA-4 3x4x1	Tray	63 dB
MP34DT01TR	HCLGA-4 3x4x1	Tape and Reel	63 dB

COMING SOON! STMicroelectronics' STEVAL-MKI117V1 MEMS Microphone Demonstration Board based on the MP34DT01 and STM32 to provide and example of the decoding and streaming of digital MEMS microphone outputs. This demonstration board hosts the MP34DT01 (bottom-port digital microphone), working as a sensor, and the STM32F107RC microcontroller, working as an audio decoder.

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