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STMicroelectronics MP34DT04TR-C1
- Part No.:
- MP34DT04TR-C1
- Manufacturer:
- STMicroelectronics
- Category:
- Microphones
- Package:
- Datasheet:
-
MP34DT04TR-C1.pdf
- Description:
- MIC MEMS DIGITAL PDM OMNI -26DB
- Quantity:
- Payment:
- Shipping:
Inventory:2,256
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Product details
Overview
MP34DT04TR-C1 from STMicroelectronics is an omnidirectional digital MEMS microphone with PDM output, designed for audio capture in space-constrained portable electronics. It features –26 dBFS sensitivity, 64 dB SNR (A-weighted), 120 dBSPL acoustic overload point, and operates from 1.6–3.6 V supply across –40 °C to +85 °C. Used in mobile terminals and speech recognition systems where low-power, EMI-shielded top-port sensing is required.
For engineers reviewing the MP34DT04TR-C1 datasheet, MP34DT04TR-C1 pinout, MP34DT04TR-C1 application, or MP34DT04TR-C1 equivalent, key selection criteria include PDM timing compliance (1.2–3.25 MHz clock), LR channel selection logic, thermal robustness in reflow, and HCLGA land pattern alignment for reliable SMT placement.
Technical Context
The MP34DT04TR-C1 integrates a silicon micromachined capacitive sensing element with a CMOS interface IC to deliver single-bit PDM output synchronized to an external clock. Its L/R pin selects left- or right-channel data framing by controlling DOUT enable timing relative to CLK edges.
It supports stereo configurations via time-multiplexed PDM streams on one data line, with guaranteed turn-on time ≤10 ms and power-down current ≤10 μA. The device uses a top-port HCLGA package with integrated EMI shielding and conforms to ECOPACK®, RoHS, and "Green" standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 1.6–3.6 V - compatible with 1.8 V logic rails and tolerant of battery droop in portable systems |
| Current consumption (normal) | 650 μA typical - enables multi-mic arrays with minimal system power impact |
| Sensitivity | –26 dBFS ±3 dB - calibrated output level referenced to full-scale digital amplitude at 94 dB SPL |
| SNR | 64 dB (A-weighted) - defines usable dynamic range for voice capture in noisy environments |
| Acoustic overload point | 120 dBSPL - prevents clipping during loud transients like speaker feedback or close-proximity speech |
| Input clock frequency | 1.2–3.25 MHz - sets PDM bit rate; determines oversampling ratio and anti-aliasing performance |
| Operating temperature | –40 °C to +85 °C - validated for consumer and industrial edge devices without derating |
Pinout & Package
HCLGA (3 × 4 × 1.095 mm), top-port, 4-lead surface-mount package with integrated EMI shield and ground ring. Compliant with JEDEC J-STD-020, MSL Level 3, and RoHS/ECOPACK® requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Vdd (Pin 1) | Power supply input | Accepts 1.6–3.6 V; requires local 100 nF + 1 μF ceramic decoupling adjacent to pin |
| LR (Pin 2) | Left/right channel select | Logic high = DOUT carries right-channel data on CLK high; logic low = left-channel on CLK high |
| CLK (Pin 3) | Master synchronization clock input | Drives internal sampling; duty cycle must be 40–60%; defines PDM bit rate and timing margins |
| DOUT (Pin 4) | PDM serial data output | Single-bit stream carrying left or right channel per LR state; high-impedance when disabled |
| GND (Ground ring) | 0 V reference and EMI return path | Continuous metal ring surrounding die; critical for noise immunity and acoustic sealing |
Key Features
| Feature | Design Value |
|---|---|
| Omnidirectional acoustic response | ±2 dBr flatness from 100 Hz–4 kHz - ensures consistent pickup regardless of sound incidence angle |
| Top-port mechanical design | MEMS inlet located on top surface - simplifies PCB layout in thin enclosures with front-facing apertures |
| Integrated EMI shielding | On-package metal can - eliminates need for external shield cans in RF-dense mobile designs |
| PDM digital output | No external ADC required - direct interface to DSPs, MCUs, or audio SoCs with PDM receivers |
| Low THD+N distortion | <1% at 100 dBSPL (50 Hz–4 kHz) - preserves voice intelligibility and avoids harmonic artifacts in far-field ASR |
Applications
| Mobile Voice Capture | Laptop Far-Field Speech |
|---|---|
Use Scenario: Dual-mic beamforming array in smartphones for call clarity and voice assistant wake-word detection. IC Role / Device Role / Timing Role: Primary PDM audio sensor providing synchronized left/right streams via shared CLK and DOUT lines. Use Value: Enables real-time acoustic echo cancellation and directional noise suppression using hardware-accelerated DSP blocks. | Use Scenario: Quad-mic array embedded in laptop lid for conference call enhancement and ambient noise rejection. IC Role / Device Role / Timing Role: Low-noise, thermally stable digital microphone operating continuously during video conferencing sessions. Use Value: Delivers 64 dB SNR at 1.8 V supply without cooling fans or thermal throttling, maintaining consistent voice fidelity. |
| Digital Camera Audio Recording | VR/AR Spatial Audio Input |
Use Scenario: Stereo audio capture in compact action cameras and DSLRs with limited internal volume. IC Role / Device Role / Timing Role: Top-port MEMS microphone mounted near lens aperture to minimize mechanical vibration coupling. Use Value: 120 dBSPL AOP prevents clipping during sudden loud sounds (e.g., shutter actuation, wind gusts). | Use Scenario: Headset-integrated binaural audio capture for immersive VR content creation and spatial voice chat. IC Role / Device Role / Timing Role: Matched-pair digital microphones placed at ear positions, synchronized via common clock for phase coherence. Use Value: Sub-100 ns inter-channel timing skew ensures accurate interaural time difference (ITD) preservation for HRTF processing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital MEMS microphone applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IM69D130V50XTSA1 | Higher SNR (69 dB), lower sensitivity (–32 dBFS), bottom-port package | Better for high-fidelity recording; requires PCB cutout under device | Select when absolute SNR >65 dB is mandatory and board layout permits bottom acoustic porting |
| SPH0641LU4H-1 | PDM output, –26 dBFS sensitivity, but no LR channel select; fixed mono output | Lacks stereo multiplexing capability; simpler control interface | Choose for cost-sensitive mono applications where dual-channel framing is unnecessary |
Compared with IM69D130V50XTSA1 and SPH0641LU4H-1, the MP34DT04TR-C1 uniquely balances stereo PDM framing, top-port flexibility, and proven thermal stability in consumer-grade reflow profiles-making it optimal for compact, multi-mic OEM designs requiring field-upgradeable firmware control of channel routing.
Availability
MP34DT04TR-C1 is available at Aetrix Electronics and suitable for mobile terminals, laptop audio subsystems, and VR headset development requiring stable component supply and long-term production support.
Supply support for MP34DT04TR-C1 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 analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The MP34DT04TR-C1 belongs to ST's MEMS audio sensor product line, engineered specifically for ultra-low-power, high-SNR digital voice capture in battery-operated portable and wearable devices.
FAQ
What is the recommended decoupling capacitor configuration for MP34DT04TR-C1?
ST specifies two ceramic capacitors placed as close as possible to Pin 1 (Vdd): a 100 nF capacitor for high-frequency noise suppression and a 1 μF capacitor for bulk energy storage. Both must be low-ESR types with X7R or better dielectric, and traces should avoid vias or splits between capacitor pads and Vdd/GND pins.
How does the LR pin affect PDM data timing on DOUT?
When LR = GND, valid left-channel PDM data appears on DOUT during CLK high periods; when LR = Vdd, valid right-channel data appears during CLK high. During the opposite CLK phase, DOUT enters high-impedance state-enabling time-division multiplexing without external switching.
Is MP34DT04TR-C1 qualified for lead-free reflow soldering?
Yes-the HCLGA package is qualified per JEDEC J-STD-020 for Pb-free reflow with peak temperature up to 260 °C, 20–40 sec dwell within 5 °C of peak, and maximum ramp-down rate of 6 °C/sec. MSL rating is Level 3, requiring dry-pack handling before use.
Can MP34DT04TR-C1 be used in stereo configurations without additional logic?
Yes-two MP34DT04TR-C1 units can be wired in parallel on shared CLK and DOUT lines, with one device's LR tied to GND and the other's to Vdd. The host processor samples DOUT synchronously to CLK edges and separates left/right frames based on LR state, eliminating need for external multiplexers or glue logic.
MP34DT04TR-C1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 1.6 V ~ 3.6 V
- Current - Supply:
- 10 mA
- Port Location:
- Top
- Ratings:
- -
- Termination:
- Surface Mount
- Size / Dimension:
- 0.118" L x 0.157" W (3.00mm x 4.00mm)
- Height (Max):
- 0.079" (2.00mm)
- Shape:
- Rectangular
- Grade:
- -
- Qualification:
- -
MP34DT04TR-C1 FAQ
1.How can I place an order for MP34DT04TR-C1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MP34DT04TR-C1 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 MP34DT04TR-C1 reliable?
The price and inventory of MP34DT04TR-C1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP34DT04TR-C1 is usually 5 days.
3.What payment methods are accepted for MP34DT04TR-C1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP34DT04TR-C1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP34DT04TR-C1?
MP34DT04TR-C1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP34DT04TR-C1 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 MP34DT04TR-C1?
For technical support, including MP34DT04TR-C1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP34DT04TR-C1 requirements.
6.How does Aetrix verify that MP34DT04TR-C1 is sourced from the original manufacturer or authorized distributors?
All MP34DT04TR-C1 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 MP34DT04TR-C1 meets industry standards.
7.What is the process for return or replacement of MP34DT04TR-C1?
All MP34DT04TR-C1 units undergo pre-shipment inspection (PSI). If there is an issue with MP34DT04TR-C1, 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 MP34DT04TR-C1 part is unused and in its original packaging.
Return procedure for MP34DT04TR-C1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MP34DT04TR-C1 Tags
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SPU0410LR5H-QB
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CMB-6544PF
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MMICT390200012
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