MP45DT02

Microphones Overview

The MP45DT02 is a digital MEMS microphone manufactured by STMicroelectronics, designed for high-performance audio acquisition. It features an omnidirectional sound pressure level sensing capability with a sensitivity of -26dB ±3dB at 94dB SPL and a signal-to-noise ratio of 61dB. The device operates within a voltage range of 1.64 V to 3.6 V and consumes 650 µA of supply current. It delivers digital PDM output over a frequency range of 100 Hz to 10 kHz. The component is housed in a compact HLGA package measuring 4.77 x 3.81 x 1.375 mm with six pins, suitable for surface mount installation.

Microphones Feature Summary

• Integrates MEMS sensing element with ASIC for direct digital PDM output
• Provides omnidirectional acoustic pickup for uniform sound capture
• Operates on low voltage supply with minimal power consumption
• Features top-port design for flexible PCB layout integration

Microphones Applications

• Smart speaker voice recognition systems
• Digital audio interface management in consumer electronics
• Evaluation boards for MEMS microphone performance testing
• USB audio hub interfaces for PC streaming

Microphones Procurement Notes

Verify component status as the MP45DT02 is listed as obsolete or end-of-life in multiple distributor records. Confirm availability of alternative packages such as TR tape-and-reel or bulk variants. Ensure compliance with RoHS3 specifications and check for REACH status updates before finalizing procurement plans for new designs.

Microphones Selection Notes

Select this component when a digital PDM output is required to simplify system architecture by eliminating external ADCs. The high SNR and wide dynamic range make it suitable for environments requiring clear voice capture. Consider the small form factor and low current draw for battery-powered or space-constrained portable devices.

Microphones Part Context

This microphone is frequently utilized in STMicroelectronics evaluation kits like the STEVAL-MKI117V2 and STEVAL-MKI129V1. These boards facilitate the testing of the MP45DT02 with STM32 microcontrollers and other audio processors. The component serves as a key sensor in demonstration platforms for smart voice and audio hub applications.

Microphones Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Users should consult official STMicroelectronics channels for current lifecycle status and recommended alternatives.