MP34DT04TR

Microphones Overview

The MP34DT04TR is an ultra-compact, low-power, omnidirectional digital MEMS microphone manufactured by STMicroelectronics. It integrates a capacitive sensing element with a CMOS IC interface to provide a digital PDM output. The device features a sensitivity of -26 dBFS ±1dB at 94 dB SPL and a signal-to-noise ratio of 64 dB. It operates on a single supply voltage ranging from 1.6 V to 3.6 V with a typical current consumption of 650 µA. The acoustic overload point is 120 dBSPL, and it functions within a frequency range of 100 Hz to 10 kHz across an extended temperature range of -40 °C to +85 °C.

Microphones Feature Summary

• Omnidirectional acoustic design with EMI-shielded HCLGA package
• Digital PDM output interface for direct connection to processors
• Low power consumption suitable for battery-operated devices
• Extended operating temperature range for industrial reliability

Microphones Applications

• Voice recognition systems
• Smart home devices
• Wearable electronics
• Industrial voice control interfaces

Microphones Procurement Notes

Verify the specific suffix (e.g., TR) confirms the tape and reel packaging format required for automated assembly. Confirm that the component meets RoHS and ECOPACK environmental standards if mandated by your manufacturing regulations. Ensure the ordering part number matches the exact sensitivity and package variant specified in your schematic to avoid functional mismatches.

Microphones Selection Notes

Select this component when a compact, low-power digital microphone with omnidirectional pickup is required. It is suitable for applications needing direct digital interfacing via PDM without external ADCs. Consider the 64 dB SNR and -26 dBFS sensitivity for standard voice capture scenarios. Verify compatibility with the host processor's PDM input pins and voltage levels before integration.

Microphones Part Context

This component belongs to the MP34 series of digital MEMS microphones from STMicroelectronics. It shares the same core sensing technology and package form factor as other variants in the family, such as the MP34DT01 and MP34DT05. The primary distinction lies in specific electrical characteristics and availability status, with this model being a widely used standard option for general-purpose audio sensing.

Microphones Replacement Considerations

Direct substitutes include MP34DT01TR and MP34DT05TR-A, which share similar pinouts and PDM interfaces. Verify sensitivity and SNR differences when swapping between these variants to ensure audio performance requirements are met.