MP34DT01TR-M

Microphones Overview

The MP34DT01TR-M is an ultra-compact, low-power, omnidirectional digital MEMS microphone manufactured by STMicroelectronics. It features a capacitive sensing element and an IC interface providing PDM output. Key electrical parameters include a sensitivity of -26 dBFS ±3dB at 94dB SPL, a signal-to-noise ratio of 61 dB, and an acoustic overload point of 120 dBSPL. The device operates on a single supply voltage ranging from 1.64 V to 3.6 V with a typical current consumption of 650 µA. It supports a frequency range of 20 Hz to 20 kHz and functions within an extended temperature range of -40 °C to +85 °C.

Microphones Feature Summary

• Omnidirectional sensitivity pattern for uniform acoustic capture
• Digital PDM output interface for direct connection to audio processors
• EMI-shielded HCLGA package design for robust performance
• Low power consumption suitable for battery-operated devices

Microphones Applications

• Voice recognition systems in smart home devices
• Noise cancellation modules in mobile communication equipment
• Audio input sensors for wearable health and wellness technology
• Beamforming microphone arrays for conference systems

Microphones Procurement Notes

Verify component authenticity through authorized STMicroelectronics distributors or certified partners. Confirm the specific suffix matches the required package and tape/reel specifications. Check for RoHS compliance status and ensure storage conditions adhere to moisture sensitivity level requirements before assembly. Validate that the part number corresponds to the exact pinout and electrical characteristics needed for your circuit design.

Microphones Selection Notes

Select this component when a compact form factor and digital interface are required. It is suitable for applications needing high sound pressure handling and low power usage. Consider the PDM output compatibility with your host processor's digital audio interface. Evaluate the need for EMI shielding in electrically noisy environments. Ensure the operating voltage range aligns with your system's power supply rails.

Microphones Part Context

This component belongs to the MP34D series of digital MEMS microphones from STMicroelectronics. It is designed as a drop-in replacement for analog microphones in space-constrained designs. The series emphasizes miniaturization and digital integration to simplify system architecture. It is commonly used in evaluation boards like the X-NUCLEO-CCA02M1 for rapid prototyping of audio algorithms.

Microphones Replacement Considerations

Public confirmed substitute part numbers: MP34DT01-M, MP34DT01TR.