STMicroelectronics MP34DT01TR-M

Overview

MP34DT01TR-M from STMicroelectronics is an omnidirectional digital MEMS microphone with PDM output, –26 dBFS sensitivity, 61 dB SNR, and 120 dBSPL acoustic overload point. It operates from 1.64–3.6 V, consumes 0.6 mA in normal mode, and is housed in a top-port HCLGA (3 × 4 × 1.06 mm, 4-lead) package for space-constrained audio capture in portable devices.

For engineers reviewing the MP34DT01TR-M datasheet, MP34DT01TR-M pinout, MP34DT01TR-M application, or MP34DT01TR-M equivalent, key selection criteria include PDM interface compatibility, EMI-shielded top-port packaging, –40 °C to +85 °C operating range, low-power stereo channel support via L/R pin, and acoustic performance at high SPL.

Technical Context

The MP34DT01TR-M integrates a capacitive silicon MEMS sensing element with a dedicated CMOS interface IC to deliver single-bit PDM output synchronized to an external clock (1–3.25 MHz). Its L/R pin selects left- or right-channel data timing on the shared DOUT line, enabling stereo configuration without additional data lines.

It features A-weighted 61 dB SNR at 1 kHz/1 Pa, –26 dBFS sensitivity (typ.), and guaranteed distortion <1% THD+N at 100 dBSPL. The device uses a grounded metal cap for EMI shielding and includes internal power supply rejection (–70 dBFS) to maintain signal integrity in noisy environments.

Key Specifications

Pinout & Package

HCLGA (3 × 4 × 1.06 mm, 4-lead) top-port package with EMI-shielded metal cap, SMD-compliant, ECOPACK®/RoHS/Green certified. Ground ring (Pin 5) provides mechanical stability and EMI grounding path.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital MEMS microphone applications.

Compared with SPH0641LU4H-1 and IM69D130, the MP34DT01TR-M delivers optimal balance of top-port mechanical fit, industry-standard –26 dBFS sensitivity, and proven 61 dB SNR in a minimal 3 × 4 mm footprint-making it ideal for space-constrained mobile and portable designs where acoustic inlet location is fixed on the top surface.

Availability

MP34DT01TR-M is available at Aetrix Electronics and suitable for mobile terminals, laptop audio subsystems, and VR gaming input devices requiring stable component supply, EMI-resistant digital audio capture, and RoHS-compliant manufacturing.

Supply support for MP34DT01TR-M includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, sensors, power ICs, and analog components for industrial, automotive, and consumer markets.

The MP34DT01TR-M belongs to ST's MEMS audio sensor product line, engineered specifically for ultra-compact, low-power, high-SNR digital voice capture in portable and wearable electronics with stringent EMI and thermal constraints.

FAQ

What is the difference between MP34DT01-M and MP34DT01TR-M?

The MP34DT01TR-M is the tape-and-reel version of the MP34DT01-M, optimized for automated SMT assembly. Both share identical electrical, acoustic, and mechanical specifications-including HCLGA-4 package, PDM output, –26 dBFS sensitivity, and 61 dB SNR. Only packaging differs: tray (MP34DT01-M) vs. 10,000-unit tape-and-reel (MP34DT01TR-M).

Does the MP34DT01TR-M require external clock conditioning?

No external clock conditioning is required. The MP34DT01TR-M accepts a clean CMOS-level clock (1–3.25 MHz, 40–60% duty cycle) directly on the CLK pin. Layout best practices recommend short, impedance-controlled traces and local decoupling near Vdd to minimize jitter-induced PDM bit errors.

How is stereo audio implemented using a single DOUT line?

Stereo is achieved by toggling the LR pin: when LR = GND, left-channel data appears on DOUT; when LR = Vdd, right-channel data appears. The host must synchronize LR state changes with CLK edges and sample DOUT accordingly-enabling true time-multiplexed stereo on one data line without additional hardware.

Can the MP34DT01TR-M be used in humid or dusty environments?

Yes-the HCLGA package features a hermetically sealed metal lid and IP57-rated acoustic port (per ST qualification testing), protecting the MEMS diaphragm from dust ingress and condensation. It is rated for operation up to 85 °C and has passed JEDEC MSL3 reflow, making it suitable for consumer devices exposed to typical environmental conditions.