MP34DT05TR

Microphones Overview

The MP34DT05TR is an ultra-compact, low-power, omnidirectional digital MEMS microphone manufactured by STMicroelectronics. It integrates a capacitive sensing element with an IC interface to provide a digital PDM output. The device features a sensitivity of -26 dBFS ± 3 dB at 94 dB SPL and a signal-to-noise ratio of 64 dB. It operates within a frequency range of 100 Hz to 10 kHz and requires a supply voltage between 1.6 V and 3.6 V, with a typical supply current of 650 µA. The component is housed in a top-port HCLGA package measuring 4.00 mm x 3.00 mm x 1.10 mm.

Microphones Feature Summary

• Integrates a capacitive silicon sensing element with a CMOS-based IC interface for direct digital audio processing.
• Outputs pulse-density modulation (PDM) signals via dedicated CLK and DATA pins, eliminating the need for external analog-to-digital converters.
• Features an EMI-shielded SMD-compliant package with a top-port acoustic design for effective sound capture.
• Operates reliably across an extended temperature range from -40 °C to +85 °C.

Microphones Applications

• Mobile terminals and portable media players
• Voice recognition systems and network telephones
• Audio/Video electronic teaching equipment
• Gaming and virtual reality input devices
• Security and anti-theft alarm systems

Microphones Procurement Notes

Verify that the specific part number matches the required revision level, as the base model may have been superseded by updated variants such as the MP34DT05TR-A. Confirm compatibility with the target PCB footprint and soldering profile, ensuring adherence to moisture sensitivity level classifications. Cross-reference the datasheet for any changes in pinout or electrical characteristics compared to legacy versions before finalizing procurement orders.

Microphones Selection Notes

Select this component when designing systems requiring high-integration digital audio input without complex analog front-end circuitry. Its PDM interface allows direct connection to microcontrollers equipped with SAI or SPDIF peripherals. Consider the 64 dB SNR and wide dynamic range for applications demanding clear voice capture in moderate noise environments. Ensure the host processor supports the required PDM clock frequencies and data alignment protocols for proper signal decoding.

Microphones Part Context

This microphone belongs to the MP34 series of digital MEMS sensors, designed for compact consumer electronics. It represents a shift from analog to digital acoustic sensing, reducing board space and electromagnetic interference susceptibility. The device is part of STMicroelectronics' portfolio aimed at simplifying audio subsystem designs for mobile and IoT applications through integrated signal conditioning.

Microphones Replacement Considerations

The MP34DT05TR has reached end-of-life status. The officially confirmed direct substitute is the MP34DT05TR-A. Verify mechanical and electrical compatibility when transitioning to this replacement variant.