MP34DT01

Microphones Overview

The STEVAL-MKI117V1 is a demonstration board designed to provide an example of the decoding and streaming of digital MEMS microphone outputs. It hosts the MP34DT01 bottom-port digital microphone as a sensor and the STM32F107RC microcontroller as an audio decoder. The board functions as a sound card automatically recognized by PCs as an audio device, with connection and power supplied via USB.

Microphones Feature Summary

• Integrates MP34DT01 digital MEMS microphone for acoustic sensing
• Utilizes STM32F107RC microcontroller for PDM signal decoding
• Streams decoded audio data to host PC via USB interface
• Operates as a self-powered USB audio device

Microphones Applications

• Demonstration of digital MEMS microphone output decoding
• Audio streaming development using USB interfaces
• Evaluation of PDM signal processing workflows

Microphones Procurement Notes

Verify component status as this specific demonstration board model may be discontinued or restricted in availability. Confirm compatibility with target host systems and ensure access to necessary firmware libraries for proper operation. Check current distributor listings for stock status and regional sales restrictions before procurement planning.

Microphones Selection Notes

Select this board specifically for evaluating the MP34DT01 microphone's digital output characteristics and USB streaming capabilities. It serves as a reference design for integrating digital MEMS sensors with STM32 microcontrollers. Consider alternative expansion boards if integration into existing Nucleo ecosystems is required rather than standalone USB audio functionality.

Microphones Part Context

This evaluation kit utilizes the MP34DT01, an ultra-compact, low-power, omnidirectional digital MEMS microphone. The microphone converts acoustic waves into digital signals using PDM technology. The board pairs this sensor with an STM32 microcontroller to demonstrate real-time audio capture and transmission, serving as a foundational tool for audio algorithm development.

Microphones Replacement Considerations

The STEVAL-MKI138V1 is a confirmed substitute that provides similar functionality but utilizes the top-port variant of the MP34DT01 microphone. Both boards serve as demonstration tools for decoding and streaming digital MEMS microphone outputs via USB.