The STMicroelectronics MP34DB01TR is a high-performance MEMS (Micro-Electro-Mechanical Systems) digital microphone designed for modern audio applications requiring compact size and superior sound quality. This omnidirectional microphone utilizes advanced silicon-based MEMS technology to deliver professional-grade audio capture in an ultra-miniature form factor measuring just 4.00mm x 3.00mm x 1.10mm, making it ideal for space-constrained electronic devices.
The microphone operates on a flexible voltage range from 1.64V to 3.6V with a rated voltage of 1.8V, consuming only 650µA of supply current, which makes it exceptionally power-efficient for battery-operated devices. Its digital PDM (Pulse Density Modulation) output eliminates the need for external analog-to-digital converters, simplifying system design and reducing component count while maintaining excellent signal integrity. The device features a bottom port configuration with solder pad termination, facilitating straightforward PCB integration and automated assembly processes.
Key performance specifications include a wide frequency response range of 20Hz to 20kHz covering the full audible spectrum, sensitivity of -26dB ±3dB at 94dB SPL, and an impressive signal-to-noise ratio of 62.6dB, ensuring clear audio capture even in challenging acoustic environments. The omnidirectional pickup pattern provides consistent audio capture from all directions, making it suitable for applications requiring 360-degree sound detection.
The primary advantages of this microphone include its extremely compact rectangular form factor enabling integration into the thinnest devices, low power consumption extending battery life, digital output reducing system complexity, excellent acoustic performance with wide frequency response, and RoHS3 compliance ensuring environmental responsibility. The MEMS technology provides superior reliability, temperature stability, and resistance to shock and vibration compared to traditional electret microphones.
This microphone finds extensive application in smartphones, tablets, laptops, wearable devices, hearing aids, IoT devices, voice recognition systems, smart speakers, automotive hands-free systems, security cameras, and professional audio recording equipment. Its digital interface makes it particularly well-suited for modern digital signal processing chains and AI-powered voice applications.
Equivalent and alternative models include the STMicroelectronics MP34DT series variants such as MP34DT01-M, MP34DT05-A, and MP34DT06J, which offer similar MEMS technology with different sensitivity levels and package options. Competitive alternatives include the Infineon IM69D120 and IM69D130 series, Knowles SPH0645LM4H and SPK0641HT4H models, TDK InvenSense ICS-43432 and ICS-43434, Akustica AKU230 and AKU340 series, and Bosch BME688 for applications requiring additional environmental sensing capabilities. When selecting alternatives, considerations should include sensitivity matching, power consumption requirements, package compatibility, and specific application acoustic performance needs.
MP34DB01TR Key Technical Attributes
Type: MEMS (Silicon)
Output Type: Digital, PDM
Direction: Omnidirectional
MP34DB01TR Packing Size
The MP34DB01TR is packaged in a Tape & Reel (TR) format, ideal for automated pick-and-place assembly. Its compact dimensions measure 4.00mm by 3.00mm, with a maximum height of 1.10mm, making it suitable for applications where board space is limited. The rectangular package features bottom port location and solder pad terminations, guaranteeing ease of integration and robust mechanical stability during mounting. Thermal characteristics are well-managed thanks to its silicon MEMS technology, and its electrical properties include a rated voltage of 1.8V with an operating range spanning from 1.64V to 3.6V, paired with a low supply current of 650µA, contributing to energy-efficient designs.
MP34DB01TR Application
This MEMS microphone is widely adopted in applications such as consumer electronics, smartphones, wearables, smart home devices, voice-enabled assistants, automotive solutions, IoT sensors, and industrial products. Its omnidirectional capability and digital PDM output make it especially suitable for capturing voice and environmental sounds with clarity in various compact and mobile electronic devices.
MP34DB01TR Features
The MP34DB01TR microphone boasts an extensive frequency range of 20 Hz to 20 kHz, ensuring clear and natural sound capture that closely mirrors the human auditory spectrum. Its sensitivity is rated at -26dB ±3dB at 94dB SPL, offering a balance between audio fidelity and noise performance. With a signal-to-noise ratio of 62.6dB, the microphone provides high-quality audio output with minimal background interference. The bottom port design enhances dust and particle resistance, adding to device longevity. Its digital Pulse Density Modulation (PDM) output allows direct interfacing with modern DSP and microcontroller platforms for minimal analog signal distortion. Additionally, its omnidirectional pickup pattern enables consistent audio capture from all directions, making it versatile for various user scenarios.
MP34DB01TR Quality and Safety Features
Compliance with RoHS3 directives ensures environmentally-friendly components, free from hazardous substances, supporting sustainable product development. The robust manufacturing standards of STMicroelectronics guarantee consistent product reliability and operational safety in demanding use cases, even under varying electrical and environmental conditions.
MP34DB01TR Compatibility
The MP34DB01TR is compatible with a wide range of modern audio platforms requiring digital PDM microphone input, including advanced microcontrollers, DSPs, and application-specific integrated circuits in audio pathways. Solder pad-terminals align with common SMT assembly techniques, further enhancing integration flexibility across different device types.
MP34DB01TR Datasheet PDF
Customers are encouraged to download the most current and authoritative datasheet for the MP34DB01TR directly from our website. This document offers comprehensive technical details and design guidelines to ensure optimal product selection and application. Please visit this page to access and download the datasheet for in-depth reference.
Quality Distributor
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