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NXP Semiconductors FXPQ3115BVST1
- Part No.:
- FXPQ3115BVST1
- Manufacturer:
- NXP Semiconductors
- Category:
- Pressure Sensors, Transducers
- Package:
- 8-TLGA
- Datasheet:
-
FXPQ3115BVST1.pdf
- Description:
- IC PRESSURE SENSOR I2C 8-TSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,157
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Product details
Overview
FXPQ3115BVST1 from NXP Semiconductors is a compact, piezoresistive absolute pressure sensor with integrated I2C digital interface, 20 kPa–110 kPa operating range, 1.5 Pa RMS pressure noise (128× oversample), and on-chip altimetry calculation. It delivers direct 20-bit pressure (Pa) and 12-bit temperature (°C) outputs, and is biomedically certified (USP Class VI) for use in CPAP masks, inhalers, and oxygen concentrators.
For engineers reviewing the FXPQ3115BVST1 datasheet, FXPQ3115BVST1 pinout, FXPQ3115BVST1 application, or FXPQ3115BVST1 equivalent, key selection considerations include its programmable autonomous acquisition modes (1 s–9 h interval), embedded 32-sample FIFO for up to 12-day data logging, dual interrupt pins (INT1/INT2), and factory-calibrated offset/linearity across −40 °C to +85 °C.
Technical Context
The FXPQ3115BVST1 integrates MEMS pressure sensing with an ASIC containing a high-resolution ADC, digital signal processing, and I2C interface logic. Its internal compensation engine computes barometric pressure (Pa) or altitude (m) using US Standard Atmosphere 1976, eliminating MCU-side unit conversion and calibration math.
It supports three operational states-OFF, STANDBY, and ACTIVE-with SBYB bit control, and features two independently configurable interrupt outputs (INT1/INT2) for data-ready or threshold-triggered events. The device uses a fixed 7-bit I2C address (0x60) and operates with separate analog (VDD: 1.95–3.6 V) and digital (VDDIO: 1.62–3.6 V) supply rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 20 kPa to 110 kPa absolute - covers sea-level to ~9,000 m altitude and medical airflow monitoring |
| Effective Resolution | 1.5 Pa RMS (128× OSR) - enables sub-centimeter altitude step detection (0.0625 m LSB) |
| Accuracy (50–110 kPa) | ±0.75 kPa (−10 °C to 70 °C) - traceable to factory calibration with user-adjustable offset registers |
| Supply Current | 40 µA per measurement-second (standard mode) - supports battery-powered portable medical devices |
| I²C Interface | 7-bit address 0x60, up to 4 MHz clock (Cb = 20 pF) - compatible with standard and fast-mode microcontrollers |
| Operating Temp | −40 °C to +85 °C - validated for clinical environments and wearable health monitors |
| FIFO Depth | 32 samples - enables autonomous logging without host intervention for up to 12 days at 1 Hz |
Pinout & Package
FXPQ3115BVST1 is housed in an 8-pin LGA package (3.0 mm × 5.0 mm × 1.1 mm) with exposed cavity for pressure port access. Biomedical gel coating ensures USP Class VI compliance and uniform pressure transmission to the MEMS diaphragm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Analog power supply | 1.95–3.6 V rail powering MEMS, ADC, and regulators; requires 10 µF + 100 nF decoupling |
| CAP | External bypass capacitor | Connects to internal regulator output; stabilizes reference voltage for precision ADC operation |
| GND | Ground reference | Common return for analog and digital sections; must be low-impedance and thermally isolated from heat sources |
| VDDIO | Digital I/O supply | 1.62–3.6 V rail for SCL/SDL/INT pins; independent of VDD to support mixed-voltage systems |
| INT2 | Programmable interrupt output | Open-drain, active-low; configurable for data-ready, FIFO-full, or pressure/temperature threshold events |
| INT1 | Programmable interrupt output | Independent second interrupt channel; supports concurrent event handling without software polling |
| SDL | I²C serial data line | Bi-directional, open-drain; requires external pull-up; supports standard/fast-mode timing per Table 8 |
| SCL | I²C serial clock line | Input-only; controls data transfer timing; tolerates up to 4 MHz with low bus capacitance (20 pF) |
Key Features
| Feature | Design Value |
|---|---|
| On-chip altimetry calculation | Direct altitude output in meters using US Standard Atmosphere 1976 and user-configurable sea-level pressure (OFF_H) |
| Autonomous acquisition modes | Configurable one-shot, polling, interrupt-driven, or FIFO-based logging - reduces host MCU firmware overhead |
| Biomedical gel encapsulation | USP Class VI compliant elastomer enabling safe patient-airway contact in CPAP, inhalers, and spirometers |
| Dual programmable interrupts | INT1 and INT2 independently assignable to pressure change, temperature delta, FIFO status, or data-ready events |
| Factory-trimmed calibration | Non-volatile offset/sensitivity coefficients stored on-die; user override registers allow post-mounting drift correction |
Applications
| CPAP Machine Monitoring | Inhaler Dose Tracking |
|---|---|
|
Use Scenario: Real-time airway pressure feedback during sleep therapy to maintain prescribed therapeutic pressure levels. IC Role / Device Role / Timing Role: Absolute pressure sensor providing closed-loop control input to the blower motor driver; updates at ≥1 Hz with <100 ms latency. Use Value: Enables adaptive pressure delivery and leak compensation using calibrated 1.5 Pa resolution and −40 °C to +85 °C stability. |
Use Scenario: Detecting and counting actuation events and inspiratory flow profiles in metered-dose inhalers. IC Role / Device Role / Timing Role: High-speed pressure transducer capturing transient airflow dynamics; sampled at up to 100 Hz in one-shot mode. Use Value: Delivers 20-bit pressure data with 0.25 Pa LSB for precise inspiratory peak detection and dose verification. |
| Oxygen Concentrator Control | Wearable Health Monitor |
|
Use Scenario: Monitoring outlet pressure and altitude-compensated O₂ concentration in portable concentrators used at varying elevations. IC Role / Device Role / Timing Role: Barometer/altimeter co-processor calculating local atmospheric pressure to adjust O₂ generation algorithms. Use Value: Provides direct altitude output (0.0625 m LSB) and pressure (0.25 Pa LSB) with no MCU computation burden. |
Use Scenario: Altitude-aware activity tracking in fitness wearables, including floor-climbing detection and elevation gain logging. IC Role / Device Role / Timing Role: Low-power altimetry sensor operating in autonomous FIFO mode (1 sample/hour) for multi-day battery life. Use Value: Achieves 12-day continuous logging via 32-sample FIFO and 2 µA standby current, minimizing host wake-ups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPL3115A2 | Same architecture and register map; identical 0x60 I²C address; lacks USP Class VI gel coating | Not certified for direct patient airway contact; suitable for industrial or consumer altimetry only | Select FXPQ3115BVST1 for medical devices requiring biocompatibility; MPL3115A2 for cost-sensitive non-medical use |
| BMP280 | Higher max pressure (1100 hPa), lower resolution (0.01 hPa ≈ 1 Pa), no FIFO, no interrupt outputs | Limited to barometric weather stations and basic altitude estimation; no autonomous logging or medical qualification | Choose FXPQ3115BVST1 when FIFO, dual interrupts, USP Class VI, or sub-kPa accuracy in 20–110 kPa range is required |
Compared with MPL3115A2 and BMP280, FXPQ3115BVST1 uniquely combines medical-grade biocompatibility, embedded FIFO-based data logging, dual programmable interrupts, and factory-trimmed ±0.75 kPa accuracy over its full 20–110 kPa medical operating range - making it the only qualified option for regulated respiratory devices.
Availability
FXPQ3115BVST1 is available at Aetrix Electronics and suitable for CPAP machine monitoring, inhaler dose tracking, and oxygen concentrator control requiring stable component supply, long-term lifecycle assurance, and regulatory-compliant sourcing.
Supply support for FXPQ3115BVST1 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and medical applications.
The FXPQ3115BVST1 belongs to NXP's precision MEMS sensor family, designed specifically for ultra-low-power, high-accuracy pressure and altimetry measurement in regulated healthcare equipment and portable diagnostics.
FAQ
What is the pressure measurement range and accuracy specification of the FXPQ3115BVST1?
The FXPQ3115BVST1 has an operational pressure range of 20 kPa to 110 kPa absolute, with a calibrated range of 50 kPa to 110 kPa. Its absolute accuracy is ±0.75 kPa over −10 °C to +70 °C within that calibrated range. This accuracy is achieved through factory-trimmed offset and sensitivity coefficients stored in on-chip non-volatile memory, and the FXPQ3115BVST1 supports user-programmable offset correction to compensate for mounting-induced stress.
Does the FXPQ3115BVST1 support both barometer and altimeter modes, and how is altitude calculated?
Yes, the FXPQ3115BVST1 supports both barometer and altimeter modes. In altimeter mode, altitude is calculated internally using the measured pressure (p), user-configurable sea-level reference pressure (OFF_H), and the US Standard Atmosphere 1976 model. The result is output directly in meters with 0.0625 m LSB resolution - eliminating the need for external computation or floating-point libraries in the host MCU.
What are the power supply requirements and typical current consumption of the FXPQ3115BVST1?
The FXPQ3115BVST1 requires two independent supplies: VDD (1.95–3.6 V) for analog circuitry and VDDIO (1.62–3.6 V) for digital I/O. Typical active current is 40 µA per measurement-second in standard mode (16× oversample). In STANDBY mode, current drops to 2 µA. During acquisition/conversion, peak current reaches 2 mA. These characteristics make the FXPQ3115BVST1 well-suited for battery-powered medical wearables and portable diagnostics.
How does the FIFO and autonomous data acquisition work in the FXPQ3115BVST1?
FXPQ3115BVST1 includes a 32-sample FIFO buffer that supports autonomous data logging without host intervention. Acquisition intervals are programmable from 1 second to 9 hours. At 1 Hz, the FIFO enables up to 32 seconds of storage; at 1 sample/hour, it supports over 12 days of continuous logging. Data is timestamped and retrievable via I²C, reducing host MCU polling overhead and extending battery life in remote monitoring applications.
Is the FXPQ3115BVST1 certified for use in medical devices contacting patient airways?
Yes, the FXPQ3115BVST1 is coated with a biomedically approved gel that meets United States Pharmacopeia (USP) Biological Testing Class VI requirements - confirming its non-toxicity and non-allergenicity. This certification explicitly qualifies the FXPQ3115BVST1 for direct use in CPAP masks, inhalers, nebulizers, and other respiratory devices where the sensor interfaces with patient airways.
FXPQ3115BVST1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-TLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Applications:
- Medical Ventilation
- Pressure Type:
- Absolute
- Operating Pressure:
- 2.9PSI ~ 15.95PSI (20kPa ~ 110kPa)
- Output Type:
- I2C
- Output:
- 7 b
- Accuracy:
- ±0.11PSI (±0.75kPa)
- Voltage - Supply:
- 1.95V ~ 3.6V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- -
- Termination Style:
- SMD (SMT) Tab
- Maximum Pressure:
- 72.52PSI (500kPa)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-LGA (3x5)
FXPQ3115BVST1 FAQ
1.How can I place an order for FXPQ3115BVST1 through Aetrix?
Please submit a Request for Quotation (RFQ) for FXPQ3115BVST1 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 FXPQ3115BVST1 reliable?
The price and inventory of FXPQ3115BVST1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FXPQ3115BVST1 is usually 5 days.
3.What payment methods are accepted for FXPQ3115BVST1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FXPQ3115BVST1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FXPQ3115BVST1?
FXPQ3115BVST1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FXPQ3115BVST1 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 FXPQ3115BVST1?
For technical support, including FXPQ3115BVST1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FXPQ3115BVST1 requirements.
6.How does Aetrix verify that FXPQ3115BVST1 is sourced from the original manufacturer or authorized distributors?
All FXPQ3115BVST1 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 FXPQ3115BVST1 meets industry standards.
7.What is the process for return or replacement of FXPQ3115BVST1?
All FXPQ3115BVST1 units undergo pre-shipment inspection (PSI). If there is an issue with FXPQ3115BVST1, 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 FXPQ3115BVST1 part is unused and in its original packaging.
Return procedure for FXPQ3115BVST1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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