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STMicroelectronics MP34DT06JTR
- Part No.:
- MP34DT06JTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microphones
- Package:
- Datasheet:
-
MP34DT06JTR.pdf
- Description:
- MIC MEMS DIGITAL PDM OMNI -26DB
- Quantity:
- Payment:
- Shipping:
Inventory:11,877
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Product details
Overview
MP34DT06JTR from STMicroelectronics is an ultra-compact, low-power, omnidirectional digital MEMS microphone with PDM output, –26 dBFS ±1 dB sensitivity, 64 dB(A) SNR, and 122.5 dBSPL acoustic overload point. It operates from 1.6–3.6 V, consumes only 650 µA in normal mode, and is housed in a top-port HCLGA-4 (3 × 4 × 1 mm) package for space-constrained mobile and portable audio systems.
For engineers reviewing the MP34DT06JTR datasheet, MP34DT06JTR pinout, MP34DT06JTR application, or MP34DT06JTR equivalent, this device delivers verified PDM audio capture performance in stereo-configurable, EMI-shielded, RoHS-compliant designs requiring stable SNR, low distortion (<0.2% THD+N at 94 dBSPL), and extended temperature operation (–40 °C to +85 °C).
Technical Context
The MP34DT06JTR integrates a silicon micromachined capacitive sensing element with a dedicated CMOS interface IC to produce a single-bit PDM output stream synchronized to an external 1.2–3.25 MHz clock. Its L/R pin selects left- or right-channel data alignment on DOUT by controlling high-impedance states per clock edge.
It features A-weighted 64 dB SNR referenced to 94 dB SPL, –26 dBFS ±1 dB sensitivity, and <0.2% THD+N at 94 dBSPL. The device supports power-down mode (5 µA) and exhibits –90 dBFS PSR under 100 mVpp 1 kHz supply ripple, ensuring robust audio fidelity in noisy embedded environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 1.6–3.6 V - Supports direct connection to common 1.8 V or 3.3 V system rails without LDO. |
| Current Consumption (Normal) | 650 µA - Enables >100-hour battery life in always-on voice wake-up applications. |
| Sensitivity | –26 dBFS ±1 dB - Delivers consistent signal level across production units for reliable AGC calibration. |
| SNR | 64 dB(A) @ 94 dB SPL - Meets high-fidelity voice capture requirements for speech recognition and VoIP. |
| AOP | 122.5 dBSPL - Withstands loud transient sounds (e.g., claps, door slams) without clipping or distortion. |
| Output Format | PDM - Directly interfaces with standard digital audio controllers and DSPs without external ADC. |
| Operating Temp | –40 °C to +85 °C - Qualified for use in automotive cabin modules and industrial handhelds. |
Pinout & Package
HCLGA-4 (3 × 4 × 1 mm) top-port package with EMI shielding, SMD-compliant footprint, and ECOPACK®/RoHS/Green compliance. Features integrated ground ring for mechanical stability and acoustic isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vdd | Power supply input | Accepts 1.6–3.6 V; requires local 100 nF + 1 µF ceramic decoupling per layout guidelines. |
| LR | Left/right channel select | Logic-high = DOUT valid on CLK high; logic-low = DOUT valid on CLK low - enables stereo pairing without additional control lines. |
| CLK | Master synchronization clock input | Accepts 1.2–3.25 MHz square wave (40–60% duty); defines PDM bit rate and sampling timing. |
| DOUT | PDM serial data output | Single-bit stream aligned to CLK edges per LR state; compatible with I²S-capable peripherals via simple clock domain translation. |
| GND (ring) | Signal and shield ground | Ground ring surrounds die area to suppress EMI and stabilize acoustic port acoustics; must be connected to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Omnidirectional PDM output | Enables consistent voice pickup from any azimuth angle in compact enclosures without directional bias. |
| Top-port acoustic inlet | Allows placement directly under metal bezels or glass covers - ideal for slim smartphones and tablets. |
| EMI-shielded HCLGA package | Reduces RF susceptibility in LTE/Wi-Fi coexistence scenarios without external metal cans or ferrites. |
| Low-distortion performance | 0.2% THD+N at 94 dBSPL ensures clean spectral content for neural net-based speech processing pipelines. |
| Power-down mode (5 µA) | Supports rapid wake-on-voice entry while maintaining sub-10 µA system standby current budgets. |
Applications
| Smartphone Voice Interface | Laptop Far-Field Array |
|---|---|
|
Use Scenario: Dual-mic beamforming array for voice assistant activation and noise-suppressed call uplink. IC Role / Device Role / Timing Role: Primary PDM audio capture node synchronized to host SoC clock; L/R pin configures interleaved stereo sampling. Use Value: 64 dB SNR and 122.5 dBSPL AOP enable reliable keyword spotting in noisy urban environments without analog gain saturation. |
Use Scenario: Four-microphone linear array mounted along laptop lid edge for conference call pickup and spatial audio capture. IC Role / Device Role / Timing Role: Synchronized PDM sensor in multi-device timing chain; CLK distributed from audio codec to ensure phase coherence. Use Value: Top-port design allows flush mounting behind narrow speaker grilles; EMI shielding prevents Wi-Fi 2.4 GHz interference in real-time transcription. |
| VR Headset Speech Input | Security Camera Audio Trigger |
|
Use Scenario: Embedded dual-mic pair inside VR headset ear cup for real-time voice command and lip-sync audio feedback. IC Role / Device Role / Timing Role: Low-latency PDM source feeding FPGA-based echo cancellation; powered from 1.8 V rail shared with IMU. Use Value: 650 µA active current and –40 °C to +85 °C rating support thermal-constrained wearable form factors with continuous voice monitoring. |
Use Scenario: Always-listening audio trigger in outdoor IP camera housing detecting glass break or intrusion sounds. IC Role / Device Role / Timing Role: Wake-on-sound sensor operating in periodic power-down mode; triggered by host MCU on DOUT activity threshold. Use Value: 5 µA power-down current extends battery life in solar-powered edge devices; 122.5 dBSPL AOP avoids false triggers from wind or rain noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital MEMS microphone applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INVENSENSE ICS-43434 | 65 dB SNR, 1.75 V min supply, bottom-port package | Requires PCB cutout for acoustic path; less suitable for sealed front-panel mounting | Select when higher SNR is critical and mechanical layout permits bottom-side sound inlet. |
| TDK INMP522 | 63 dB SNR, 2.3–3.6 V supply, no L/R channel select pin | Fixed left-channel output; stereo requires two independent clocks or post-processing alignment | Select for cost-sensitive mono applications where channel flexibility is unnecessary. |
Compared with ICS-43434 and INMP522, the MP34DT06JTR uniquely combines top-port mechanical integration, programmable L/R channel alignment, and guaranteed 64 dB SNR in a 3 × 4 mm footprint-making it optimal for space-limited, stereo-ready consumer audio designs.
Availability
MP34DT06JTR is available at Aetrix Electronics and suitable for smartphone voice interfaces, laptop far-field arrays, and VR headset speech input requiring stable component supply, full tape-and-reel packaging, and long-term industrial lifecycle support.
Supply support for MP34DT06JTR 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/mixed-signal products for industrial, automotive, and consumer markets.
The MP34DT06JTR belongs to ST's MEMS audio sensor product line, engineered specifically for high-SNR, low-power, surface-mount digital microphone applications in mobile and portable electronics where size, EMI resilience, and acoustic consistency are critical.
FAQ
What is the recommended power supply decoupling for MP34DT06JTR?
Place a 100 nF ceramic capacitor and a 1 µF ceramic capacitor as close as possible to Pin 1 (Vdd), with short, low-inductance traces to the ground ring. This configuration suppresses high-frequency switching noise and ensures stable PDM output integrity during dynamic acoustic events.
How does the L/R pin affect stereo configuration?
The L/R pin selects whether valid PDM data appears on DOUT during CLK high (L/R = Vdd) or CLK low (L/R = GND). Two MP34DT06JTRs can be wired with opposite L/R states and driven by the same CLK to generate time-interleaved stereo data without additional control logic or clock skew management.
Is MP34DT06JTR sensitive to soldering thermal stress?
Yes - it is rated MSL3 and qualified to JEDEC J-STD-020. Peak reflow temperature must not exceed 260 °C, with time above liquidus (217 °C) limited to 60–150 sec. Exceeding these limits risks MEMS membrane delamination or permanent sensitivity shift.
Can MP34DT06JTR operate reliably in high-humidity environments?
Yes - the HCLGA package includes hermetic sealing of the MEMS cavity and EMI shield. ST specifies operation up to 85 °C and qualifies the device for condensing humidity environments typical of automotive cabin and outdoor security applications, provided PCB conformal coating is applied externally if needed.
MP34DT06JTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- MEMS (Silicon)
- Output Type:
- Digital, PDM
- Direction:
- Omnidirectional
- Frequency Range:
- 100 Hz ~ 10 kHz
- Sensitivity:
- -26dB ±3dB @ 94dB SPL
- S/N Ratio:
- 64dB
- Impedance:
- -
- Voltage - Rated:
- 1.8 V
- Voltage Range:
- -
- Current - Supply:
- 650 µA
- Port Location:
- Top
- Ratings:
- -
- Termination:
- Solder Pads
- Size / Dimension:
- 0.118" L x 0.157" W (3.00mm x 4.00mm)
- Height (Max):
- 0.043" (1.10mm)
- Shape:
- Rectangular
- Grade:
- -
- Qualification:
- -
MP34DT06JTR FAQ
1.How can I place an order for MP34DT06JTR through Aetrix?
Please submit a Request for Quotation (RFQ) for MP34DT06JTR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MP34DT06JTR reliable?
The price and inventory of MP34DT06JTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP34DT06JTR is usually 5 days.
3.What payment methods are accepted for MP34DT06JTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP34DT06JTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP34DT06JTR?
MP34DT06JTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP34DT06JTR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MP34DT06JTR?
For technical support, including MP34DT06JTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP34DT06JTR requirements.
6.How does Aetrix verify that MP34DT06JTR is sourced from the original manufacturer or authorized distributors?
All MP34DT06JTR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MP34DT06JTR meets industry standards.
7.What is the process for return or replacement of MP34DT06JTR?
All MP34DT06JTR units undergo pre-shipment inspection (PSI). If there is an issue with MP34DT06JTR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MP34DT06JTR part is unused and in its original packaging.
Return procedure for MP34DT06JTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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