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STMicroelectronics MP23ABS1TR
- Part No.:
- MP23ABS1TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microphones
- Package:
- Datasheet:
-
MP23ABS1TR.pdf
- Description:
- MIC MEMS ANALOG OMNI -38DB
- Quantity:
- Payment:
- Shipping:
Inventory:4,838
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Product details
Overview
MP23ABS1TR from STMicroelectronics is a high-performance MEMS audio sensor with single-ended analog bottom-port output, designed for compact, ultra-low-power voice capture in space-constrained portable devices. It delivers -38 dBV sensitivity at 94 dBSPL/1 kHz, 64 dB(A) signal-to-noise ratio, 130 dBSPL acoustic overload point, and operates from 1.52 V to 3.6 V supply. Used in active noise-canceling headsets and smart speakers for primary voice input.
For engineers reviewing the MP23ABS1TR datasheet, MP23ABS1TR pinout, MP23ABS1TR application, or MP23ABS1TR equivalent, key selection criteria include its 150 μA max current draw, RHLGA-5L 3.5 × 2.65 × 0.98 mm package, -40 °C to +85 °C operating range, and flat frequency response from 35 Hz to 15 kHz.
Technical Context
The MP23ABS1TR integrates a silicon micromachined capacitive sensing element with an on-chip ASIC interface, enabling analog output without external biasing circuitry. Its design targets low-latency, high-fidelity voice acquisition under RF-rich environments, supported by 60 dB PSRR and enhanced RF immunity.
It features ultra-flat frequency response (±1 dBr from 100 Hz to 9 kHz), guaranteed mechanical robustness per IEC 60068-2-32 drop tests, and meets ECOPACK, RoHS, and "Green" compliance. The device is qualified for extended temperature operation up to +85 °C and storage up to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensitivity | -38 dBV ±1 dB @ 94 dBSPL, 1 kHz - enables consistent voice level detection across production units |
| SNR | 64 dB(A) - supports clear far-field speech recognition in ambient noise |
| AOP | 130 dBSPL typ. - withstands loud transients without clipping in headset microphones |
| Supply Current | 150 μA max - extends battery life in wearables and hearables |
| Supply Voltage | 1.52 V – 3.6 V - compatible with single-cell Li-ion and coin-cell power rails |
| Operating Temp | -40 °C to +85 °C - validated for use inside consumer enclosures under thermal stress |
| Frequency Response | ±1 dBr from 100 Hz–9 kHz - preserves vocal harmonics for natural-sounding voice capture |
Pinout & Package
The MP23ABS1TR is housed in an RHLGA-5L metal cap package measuring 3.5 × 2.65 × 0.98 mm, optimized for reflow soldering and mechanical durability in handheld applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out) | Analog output | Single-ended AC-coupled voltage output referenced to Vdd/2; requires no external bias resistor |
| 2, 3, 4 (GND) | Ground terminals | Three dedicated GND pins minimize ground impedance and improve RF rejection |
| 5 (Vdd) | Power supply | Accepts 1.52–3.6 V; internal regulation ensures stable bias for MEMS element and ASIC |
Key Features
| Feature | Design Value |
|---|---|
| Omnidirectional acoustic response | Enables consistent pickup regardless of sound incidence angle-critical for multi-mic beamforming arrays |
| Ultra-low-power operation | 150 μA max current allows continuous voice wake-up in battery-powered hearables for >1 week |
| Enhanced RF immunity | Validated against IEC 61000-4-2 ESD-GUN ±8 kV - prevents pop/click artifacts during cellular/Wi-Fi transmission |
| Reflow-compatible RHLGA package | Supports standard SMT assembly without underfill or special handling-reduces manufacturing cost and yield risk |
| Extended temperature qualification | Operates reliably from -40 °C to +85 °C - suitable for automotive cabin and outdoor wearable deployments |
Applications
| Mobile Phones | Wearables |
|---|---|
Use Scenario: Primary voice capture in slim smartphone bezels with limited PCB real estate. IC Role / Device Role / Timing Role: Analog microphone sensor providing low-noise, low-latency voice input to baseband processor ADC. Use Value: 3.5 × 2.65 mm footprint and bottom port enable placement under display or chassis without acoustic tunneling. | Use Scenario: Always-on voice assistant in wrist-worn fitness trackers with multi-day battery life. IC Role / Device Role / Timing Role: Low-power analog voice sensor feeding into ultra-low-power MCU with integrated ADC. Use Value: 150 μA max current draw enables 24/7 voice wake-up without compromising runtime. |
| Hearables | Active Noise-Canceling Headsets |
Use Scenario: In-ear voice pickup in true wireless stereo (TWS) earbuds with aggressive size constraints. IC Role / Device Role / Timing Role: Compact analog microphone for near-field speech capture adjacent to ear canal. Use Value: 0.98 mm height and bottom port allow integration into sub-15 mm earbud stems without acoustic shadowing. | Use Scenario: Reference microphone for feedforward ANC in over-ear headphones exposed to wind and handling noise. IC Role / Device Role / Timing Role: High-SNR, high-AOP analog sensor capturing ambient noise before earcup attenuation. Use Value: 130 dBSPL AOP prevents saturation from sudden loud transients (e.g., door slams), preserving ANC loop stability. |
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-43434 | Digital PDM output; 65 dB SNR; 1.8 V only supply; 3.35 × 2.5 × 0.98 mm | Requires PDM-capable host processor; no analog filtering needed; higher EMI immunity in digital domain | Select when system already uses PDM interface and needs marginally higher SNR |
| TDK INMP522 | Analog output; -38 dBV sensitivity; 63 dB SNR; 3.35 × 2.5 × 0.88 mm; 180 μA typical current | Lower current efficiency and slightly reduced AOP (128 dBSPL); thinner profile may ease stacking in ultra-thin designs | Select when 0.1 mm lower height is critical and 30 μA extra current is acceptable |
Compared with ICS-43434 and INMP522, the MP23ABS1TR offers optimal balance of analog simplicity, ultra-low quiescent current, and proven RF robustness-making it preferred for cost-sensitive, battery-limited voice interfaces where analog ADC paths exist.
Availability
MP23ABS1TR is available at Aetrix Electronics and suitable for mobile phones, wearables, and active noise-canceling headsets requiring stable component supply and long-term manufacturability.
Supply support for MP23ABS1TR 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, delivering intelligent power, sensing, and control solutions across automotive, industrial, and consumer markets.
The MP23ABS1TR belongs to ST's high-performance MEMS microphone product line, engineered specifically for voice-centric portable electronics demanding low power, small form factor, and acoustic fidelity in noisy, RF-intensive environments.
FAQ
What is the recommended load resistance for MP23ABS1TR?
The MP23ABS1TR specifies a minimum load resistance of 15 kΩ, as guaranteed by design. This value ensures proper DC biasing and AC coupling integrity at the output stage. Using lower resistance loads may degrade SNR and cause gain compression due to excessive current draw from the internal buffer.
Does MP23ABS1TR require external biasing components?
No external biasing components are required. The MP23ABS1TR integrates an internal bias circuit that sets the output DC level to Vdd/2, enabling direct connection to an ADC input with only a coupling capacitor. This simplifies layout and eliminates resistor tolerance-induced sensitivity drift.
How is the MP23ABS1TR protected against electrostatic discharge?
The MP23ABS1TR is qualified to ±8 kV contact discharge per IEC 61000-4-2 (ESD-GUN), ±2 kV HBM, ±200 V MM, and ±750 V CDM. Its metal cap package and internal protection diodes provide robust immunity, but handling precautions-including grounded workstations and ESD-safe packaging-remain essential during assembly.
Can MP23ABS1TR operate at 1.52 V supply while maintaining full specifications?
Yes. All key specifications-including sensitivity, SNR, and AOP-are guaranteed across the full 1.52 V to 3.6 V supply range. At 1.52 V, current consumption remains ≤150 μA, and frequency response flatness is maintained per Table 4 in the datasheet, enabling reliable operation in energy-harvested or low-voltage systems.
MP23ABS1TR 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:
- 35 Hz ~ 1.5 kHz
- Sensitivity:
- -38dB ±1dB @ 94dB SPL
- S/N Ratio:
- 64dB
- Impedance:
- -
- Voltage - Rated:
- 2.75 V
- Voltage Range:
- -
- Current - Supply:
- 150 µA
- Port Location:
- Bottom
- Ratings:
- -
- Termination:
- Solder Pads
- Size / Dimension:
- 0.138" L x 0.104" W (3.50mm x 2.65mm)
- Height (Max):
- 0.043" (1.08mm)
- Shape:
- Rectangular
- Grade:
- -
- Qualification:
- -
MP23ABS1TR FAQ
1.How can I place an order for MP23ABS1TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MP23ABS1TR 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 MP23ABS1TR reliable?
The price and inventory of MP23ABS1TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP23ABS1TR is usually 5 days.
3.What payment methods are accepted for MP23ABS1TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP23ABS1TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP23ABS1TR?
MP23ABS1TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP23ABS1TR 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 MP23ABS1TR?
For technical support, including MP23ABS1TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP23ABS1TR requirements.
6.How does Aetrix verify that MP23ABS1TR is sourced from the original manufacturer or authorized distributors?
All MP23ABS1TR 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 MP23ABS1TR meets industry standards.
7.What is the process for return or replacement of MP23ABS1TR?
All MP23ABS1TR units undergo pre-shipment inspection (PSI). If there is an issue with MP23ABS1TR, 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 MP23ABS1TR part is unused and in its original packaging.
Return procedure for MP23ABS1TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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