MP34DB01TR

Microphones Overview

The MP34DB01TR 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 PDM digital output. The device features a bottom-port design within an EMI-shielded RHLGA package. Key electrical parameters include a supply voltage range of 1.64 V to 3.6 V and a typical supply current of 650 µA. Acoustic performance specifications consist of a sensitivity of -26 dBFS ±3dB at 94 dB SPL, a signal-to-noise ratio of 62.6 dB, and an acoustic overload point of 120 dBSPL. The frequency response spans from 20 Hz to 20 kHz.

Microphones Feature Summary

• Omnidirectional digital MEMS microphone with PDM single-bit output capability
• Bottom-port design with EMI-shielded SMD-compliant package
• Capacitive sensing element integrated with dedicated CMOS interface circuitry
• Extended operating temperature range guaranteed from -40 °C to +85 °C

Microphones Applications

• Digital audio recording systems requiring compact form factors
• Voice recognition interfaces utilizing STM32 microcontrollers
• Portable electronic devices necessitating low power consumption sensors
• Audio input modules for consumer electronics and personal computers

Microphones Procurement Notes

Verify component authenticity through authorized distribution channels due to obsolete status. Confirm package orientation and pinout compatibility during integration. Ensure supply voltage levels remain within the specified 1.64 V to 3.6 V range to prevent damage. Check manufacturing date codes against RoHS3 compliance requirements. Validate acoustic port alignment on the PCB to maintain specified directivity characteristics.

Microphones Selection Notes

Select this component for designs requiring a digital interface to eliminate analog noise susceptibility. Consider the bottom-port architecture for optimal acoustic coupling in constrained enclosures. Evaluate the 650 µA current draw against system battery life constraints. Ensure the host processor supports PDM signal decoding or utilizes compatible microcontrollers like the STM32 series for direct streaming.

Microphones Part Context

The MP34DB01 belongs to the MP34 family of digital MEMS microphones from STMicroelectronics. This series emphasizes miniaturization and high acoustic performance for modern mobile and IoT applications. The TR suffix indicates tape-and-reel packaging suitable for automated surface-mount assembly processes. The device represents a transition toward fully digital audio sensing solutions replacing traditional analog counterparts.

Microphones Replacement Considerations

Public documentation confirms the MP34DB01 is obsolete. No specific substitute part numbers are explicitly listed in the provided source material. Designers should consult official STMicroelectronics replacement guides for equivalent digital MEMS microphones with compatible pinouts and acoustic specifications.