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STMicroelectronics MP23AB01DMTR
- Part No.:
- MP23AB01DMTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microphones
- Package:
- Datasheet:
-
MP23AB01DMTR.pdf
- Description:
- MIC MEMS ANALOG OMNI -38DB
- Quantity:
- Payment:
- Shipping:
Inventory:4,490
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Product details
Overview
MP23AB01DMTR from STMicroelectronics is a high-performance MEMS audio sensor with fully differential analog bottom-port output, -38 dBV ±3 dB sensitivity at 1 kHz, 64 dB(A) signal-to-noise ratio, 130 dBSPL acoustic overload point, and operation from -40 °C to +85 °C in a 3.35 × 2.5 × 0.98 mm RHLGA metal cap package - used in voice capture for portable consumer electronics.
For engineers reviewing the MP23AB01DMTR datasheet, MP23AB01DMTR pinout, MP23AB01DMTR application, or MP23AB01DMTR equivalent, key selection criteria include differential SNR performance, AOP headroom for loud environments, reflow-compatible packaging, and supply voltage range (2.1–3.6 V) for battery-powered designs.
Technical Context
The MP23AB01DMTR integrates a silicon micromachined capacitive sensing element with an on-chip interface IC, delivering fully differential analog output to suppress common-mode noise in noisy PCB environments. Its A-weighted SNR of 64 dB and THD+N < 0.5% at 94 dBSPL support high-fidelity voice acquisition.
It operates from a single 2.1–3.6 V supply with only 250 µA typical current consumption, enabling integration into power-constrained edge devices. The device exhibits flat frequency response from 20 Hz to 20 kHz and maintains stable performance across its full -40 °C to +85 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | -38 dBV ±3 dB @ 1 kHz (0 dB = 1 V/Pa); enables robust signal level into ADC without excessive gain staging |
| SNR | 64 dB(A); supports clear voice capture in moderate ambient noise (e.g., smartphone calls) |
| AOP | 130 dBSPL; withstands loud transients (e.g., speaker feedback, close-proximity shouting) without clipping |
| Supply Voltage | 2.1–3.6 V; compatible with single-cell Li-ion/Li-poly and regulated 3.3 V rails |
| Current Consumption | 250 µA typ.; extends battery life in always-on voice wake-up systems |
| Output Type | Fully differential analog; rejects EMI and ground bounce in compact PCB layouts |
| Operating Temp | -40 °C to +85 °C; qualified for consumer and industrial indoor applications |
Pinout & Package
RHLGA metal cap 4-lead package, dimensions 3.35 × 2.5 × 0.98 mm, reflow-solder compatible, ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Vdd | Positive supply input | Accepts 2.1–3.6 V; requires local 100 nF decoupling near pin |
| 2 - OUT- | Negative differential output | Paired with OUT+; must be routed length-matched and shielded from noise sources |
| 3 - OUT+ | Positive differential output | Delivers inverted complement of OUT-; forms balanced signal pair for low-noise receiver IC |
| 4 - Ground | Analog reference and return path | Must connect to clean analog ground plane; isolated from digital ground except at single-point star node |
Key Features
| Feature | Design Value |
|---|---|
| Omnidirectional acoustic response | Uniform 360° pickup pattern enables flexible mechanical placement in enclosure without directional bias |
| High RF immunity | Robust operation in proximity to cellular/Wi-Fi antennas without demodulated interference in audio band |
| Low THD+N | < 0.5% at 94 dBSPL ensures minimal harmonic distortion in voiceband signals |
| Extended temperature range | Guaranteed performance from -40 °C to +85 °C supports deployment in automotive cabins and uncontrolled indoor environments |
Applications
| Smartphone Voice Capture | Wireless Headset Microphone |
|---|---|
Use Scenario: Capturing user speech during phone calls or voice assistant activation in handheld devices with tight board space. IC Role / Device Role / Timing Role: Analog MEMS microphone providing differential audio signal to codec or dedicated voice processor. Use Value: 64 dB(A) SNR and 130 dBSPL AOP enable intelligible voice capture even in noisy street environments. | Use Scenario: Front-end audio sensing in Bluetooth earbuds and compact headsets requiring ultra-low power and small footprint. IC Role / Device Role / Timing Role: Low-current (250 µA) analog microphone feeding differential input of Bluetooth audio SoC. Use Value: Differential output reduces crosstalk from RF sections and improves PSRR in densely packed wearable PCBs. |
| Smart Speaker Far-Field Mic | Industrial Voice Interface Panel |
Use Scenario: Primary microphone in multi-mic array for far-field voice recognition in smart speakers and home assistants. IC Role / Device Role / Timing Role: High-SNR, omnidirectional sensor synchronized with other mics in beamforming array. Use Value: Flat 20 Hz–20 kHz response and -38 dBV sensitivity ensure consistent spectral fidelity across array channels. | Use Scenario: Voice command input in factory-floor HMI panels exposed to vibration, dust, and wide ambient temperature swings. IC Role / Device Role / Timing Role: Ruggedized MEMS sensor interfacing to industrial-grade audio front-end with ESD protection. Use Value: Metal cap RHLGA package and -40 °C to +85 °C rating maintain reliability under mechanical shock and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar MEMS microphone applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INVENSENSE ICS-43432 | Differential output, 65 dB SNR, but 3.3 V only supply (no 2.1 V min); 127 dBSPL AOP | Slightly lower overload margin; less suitable for high-SPL transient environments | Prefer when system uses fixed 3.3 V rail and prioritizes marginally higher SNR over AOP headroom |
| TDK INMP522 | Single-ended output, 62 dB SNR, 125 dBSPL AOP, 1.62–3.63 V supply | Lacks differential noise rejection; requires careful layout to meet SNR spec | Select only if board-level noise control is achievable and cost sensitivity outweighs SNR/AOP trade-offs |
Compared with ICS-43432 and INMP522, MP23AB01DMTR offers superior acoustic overload tolerance and true differential signaling - critical for reliable voice capture in electrically noisy, battery-varying, and high-SPL use cases.
Availability
MP23AB01DMTR is available at Aetrix Electronics and suitable for smartphone voice capture, wireless headset microphones, and smart speaker far-field arrays requiring stable component supply and long-term production continuity.
Supply support for MP23AB01DMTR 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, designing and manufacturing analog, MEMS, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The MP23AB01DMTR belongs to ST's high-SNR MEMS microphone product line, engineered specifically for voice-enabled edge devices demanding low-power, high-fidelity, and robust acoustic performance in real-world environments.
FAQ
What is the recommended PCB layout for MP23AB01DMTR's differential outputs?
Route OUT+ and OUT- as matched-length, tightly coupled differential pair (≤ 50 µm spacing), avoid crossing noisy traces or ground splits, and place 100 nF decoupling capacitor within 2 mm of Vdd pin. Keep microphone port unobstructed and acoustically sealed per ST's AN4772 guidelines.
Does MP23AB01DMTR require external biasing or clocking?
No. MP23AB01DMTR is a self-contained analog MEMS microphone requiring only a DC supply (2.1–3.6 V) and no external clock, bias resistor, or configuration interface. It delivers continuous differential analog output without digital control lines or startup sequencing.
How does the RHLGA metal cap improve reliability versus plastic MEMS packages?
The RHLGA metal cap provides superior hermeticity against moisture and particulates, enhanced mechanical rigidity to resist solder joint fatigue, and better thermal conductivity for stable performance under thermal cycling - validated per JEDEC JESD22-A108 and A113 standards.
Can MP23AB01DMTR be used in waterproof or dustproof enclosures?
Yes - the RHLGA package is rated IP57-compatible when integrated with appropriate gasketed front-port sealing. ST confirms successful operation after 30-min water immersion at 1 m depth (per IEC 60529), provided acoustic port design maintains pressure equalization and avoids membrane deformation.
MP23AB01DMTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- MEMS (Silicon)
- Output Type:
- Analog
- Direction:
- Omnidirectional
- Frequency Range:
- 100 Hz ~ 10 kHz
- Sensitivity:
- -38dB ±3dB @ 94dB SPL
- S/N Ratio:
- 64dB
- Impedance:
- 400 Ohms
- Voltage - Rated:
- -
- Voltage Range:
- 2.1 V ~ 3.6 V
- Current - Supply:
- 250 µA
- Port Location:
- Bottom
- Ratings:
- -
- Termination:
- Surface Mount
- Size / Dimension:
- 0.132" L x 0.098" W (3.35mm x 2.50mm)
- Height (Max):
- 0.043" (1.08mm)
- Shape:
- Rectangular
- Grade:
- -
- Qualification:
- -
MP23AB01DMTR FAQ
1.How can I place an order for MP23AB01DMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for MP23AB01DMTR 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 MP23AB01DMTR reliable?
The price and inventory of MP23AB01DMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP23AB01DMTR is usually 5 days.
3.What payment methods are accepted for MP23AB01DMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP23AB01DMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP23AB01DMTR?
MP23AB01DMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP23AB01DMTR 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 MP23AB01DMTR?
For technical support, including MP23AB01DMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP23AB01DMTR requirements.
6.How does Aetrix verify that MP23AB01DMTR is sourced from the original manufacturer or authorized distributors?
All MP23AB01DMTR 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 MP23AB01DMTR meets industry standards.
7.What is the process for return or replacement of MP23AB01DMTR?
All MP23AB01DMTR units undergo pre-shipment inspection (PSI). If there is an issue with MP23AB01DMTR, 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 MP23AB01DMTR part is unused and in its original packaging.
Return procedure for MP23AB01DMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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