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STMicroelectronics LPS27HHTWTR
- Part No.:
- LPS27HHTWTR
- Manufacturer:
- STMicroelectronics
- Category:
- Pressure Sensors, Transducers
- Package:
- 10-FCLGA
- Datasheet:
-
LPS27HHTWTR.pdf
- Description:
- SENSOR 18.27PSIA 24BIT 10CCLGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,510
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Product details
Overview
LPS27HHTWTR from STMicroelectronics is an ultra-compact, water-resistant MEMS absolute pressure sensor with integrated temperature sensing and digital output via I²C, SPI, or MIPI I3CSM. It delivers 24-bit pressure data (260–1260 hPa range), ±0.5 hPa absolute accuracy, 0.7 Pa RMS noise, and operates from -40 °C to +85 °C in a CCLGA-10L ceramic package - used in altimeters, sport watches, and depth monitoring systems where environmental robustness and low-power operation are critical.
For engineers reviewing the LPS27HHTWTR datasheet, LPS27HHTWTR pinout, LPS27HHTWTR application, or LPS27HHTWTR equivalent, this page provides verified technical context, interface timing constraints, FIFO operational modes, embedded temperature compensation behavior, and real-world design implications of its gel-potted metal-lid package and 4 µA standby current.
Technical Context
The LPS27HHTWTR integrates a piezoresistive silicon membrane sensing element with a low-noise analog front-end, 24-bit ADC, and digital logic supporting three configurable serial interfaces. Its pressure measurement chain includes factory-trimmed calibration stored in non-volatile memory and on-the-fly temperature compensation using a co-located ±1.5 °C accurate thermal sensor.
Digital functionality includes a 128-slot, 40-bit-per-slot FIFO with six programmable modes (Bypass, FIFO, Continuous Dynamic-Stream, and trigger-based transitions), interrupt generation (Data-Ready, FIFO threshold, pressure thresholds), and configurable ODR from 1 Hz to 200 Hz - all managed via dedicated control registers (CTRL_REG1, FIFO_CTRL, INTERRUPT_CFG).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Pressure Range | 260–1260 hPa absolute - covers sea-level barometric monitoring through high-altitude altimetry and shallow submersion depth sensing. |
| Pressure Accuracy | ±0.5 hPa over 860–1160 hPa at 25–65 °C - enables <1 m altitude resolution in portable navigation systems. |
| Output Resolution | 24-bit signed pressure data (4096 LSB/hPa) - supports 0.00024 hPa effective quantization step for high-fidelity trend analysis. |
| Current Consumption | 4 µA at 1 Hz ODR (LOW_NOISE_EN = 0) - allows multi-year battery life in coin-cell-powered wearables. |
| Interface Options | I²C (up to 400 kHz), SPI (up to 10 MHz), MIPI I3CSM - permits direct connection to microcontrollers without level-shifting or protocol translation. |
| Operating Temperature | -40 °C to +85 °C - validated for automotive cabin, outdoor IoT, and industrial handheld equipment environments. |
| Package | CCLGA-10L with grounded metal lid and potting gel - rated for 10 ATM water resistance and chemical exposure (chlorine, solvents, detergents). |
Pinout & Package
The LPS27HHTWTR is housed in a 2.0 × 2.0 × 0.8 mm ceramic cavity LGA (CCLGA-10L) package with a hermetically sealed, electrically grounded metal lid and internal potting gel for moisture and ESD protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Vdd_IO | I/O power supply | Separate 1.7–3.6 V rail for interface logic - decoupling required; may differ from VDD in mixed-voltage systems. |
| 2 SCL/SPC | Clock input | Shared pin for I²C SCL or SPI SPC - determines interface mode based on CS state and register configuration. |
| 3 RES | Reserved | Must be connected to GND; no internal function - ensures mechanical and electrical stability of the ceramic substrate. |
| 4 SDA/SDI/SDO | Data bidirectional I/O | Supports I²C SDA, 4-wire SPI SDI, or 3-wire SPI SDI/SDO - direction controlled by interface protocol and CS state. |
| 5 SDO/SA0 | Data output / address bit | Outputs SPI SDO or sets LSB of I²C slave address (0x5D or 0x5C) - enables dual-device addressing on same bus. |
| 6 CS | Interface mode select | High = I²C/I3CSM enabled; Low = SPI enabled - primary hardware-selectable interface mode control. |
| 7 INT_DRDY | Interrupt / Data-Ready | Open-drain output signaling new pressure/temperature data or FIFO events - simplifies host polling and power management. |
| 8,9 GND | Ground reference | Dual ground terminals reduce impedance and improve noise immunity for analog and digital sections independently. |
| 10 VDD | Main supply | 1.7–3.6 V analog/digital core supply - requires local 100 nF decoupling; may be powered down independently of Vdd_IO. |
Key Features
| Feature | Design Value |
|---|---|
| Water-resistant packaging | Gel-potted ceramic LGA with grounded metal lid - validated for 10 ATM static pressure and long-term exposure to chlorine, fuels, and detergents. |
| Low-noise pressure sensing | 0.7 Pa RMS noise (0.007 hPa) with embedded LPF - enables stable altitude tracking in handheld devices during motion. |
| Multi-interface flexibility | Hardware-mode-selectable I²C/SPI/I3CSM on shared pins - eliminates need for external multiplexers or redesign across platform variants. |
| Configurable FIFO | 128-slot buffer with six operational modes including trigger-based transitions - reduces host CPU wake-ups and system power by >30% in intermittent-read applications. |
| Factory-calibrated compensation | Non-volatile trimming parameters applied at power-on - eliminates field calibration and ensures ±0.5 hPa accuracy without host-side correction algorithms. |
Applications
| Altimeter for Wearables | Sport Watch Barometer |
|---|---|
|
Use Scenario: Real-time elevation tracking during hiking or trail running using wrist-worn device with limited battery capacity. IC Role / Device Role / Timing Role: Absolute pressure sensor providing 1–25 Hz ODR pressure samples with embedded temperature compensation to reject thermal drift. Use Value: Enables <1.5 m vertical resolution and 4 µA standby current extends battery life beyond 12 months on CR2032. |
Use Scenario: Weather-aware activity logging in premium sport watches exposed to rain, sweat, and pool immersion. IC Role / Device Role / Timing Role: Water-resistant barometric sensor delivering 24-bit pressure data and ±1.5 °C temperature readings for weather trend prediction. Use Value: Metal-lid CCLGA package withstands 10 ATM pressure and chemical exposure while maintaining ±0.5 hPa accuracy across -10 °C to +45 °C ambient. |
| GPS-Assisted Navigation | Water Depth Monitoring |
|
Use Scenario: Indoor/outdoor seamless positioning in smartphones and tablets where GPS signal loss occurs in urban canyons or buildings. IC Role / Device Role / Timing Role: Pressure-derived altitude input fused with GNSS and IMU data to constrain vertical error in Kalman filter. Use Value: 0.7 Pa noise floor and 200 Hz max ODR support rapid pressure transients during elevator or stair ascent/descent. |
Use Scenario: Submersion depth measurement in dive computers, underwater drones, or leak-detection tools operating up to 100 m depth. IC Role / Device Role / Timing Role: Absolute pressure transducer referenced to atmospheric pressure, with gel-sealed cavity preventing ingress during repeated wet/dry cycles. Use Value: Validated 1 MPa overpressure rating and potting gel compatibility with saltwater ensure >10,000-cycle reliability in marine environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar absolute pressure sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BMP581TR | Higher ODR (up to 2000 Hz), lower noise (0.3 Pa), but no water-resistant packaging or gel encapsulation. | Preferred for dynamic motion-capture systems; unsuitable for submerged or chemically aggressive environments. | Select when ultra-low latency and noise dominate over environmental ruggedness. |
| LPS22HHTR | Same CCLGA-10L package and water resistance, but narrower pressure range (260–1260 hPa vs. 260–1260 hPa), identical accuracy, and no MIPI I3CSM support. | Drop-in replacement for legacy LPS22HH designs; lacks MIPI interface needed for next-gen ultra-low-power sensor hubs. | Select only if MIPI I3CSM is unused and full feature parity with LPS27HHTWTR is not required. |
Compared with BMP581TR and LPS22HHTR, the LPS27HHTWTR uniquely combines 10 ATM water resistance, MIPI I3CSM compatibility, and factory-trimmed 24-bit pressure output - making it the sole option for battery-powered, chemically exposed, and sensor-hub-integrated barometric applications.
Availability
LPS27HHTWTR is available at Aetrix Electronics and suitable for altimeters, sport watches, GPS-assisted navigation systems, and water depth monitoring equipment requiring stable component supply, long-term lifecycle support, and guaranteed ECOPACK-compliant sourcing.
Supply support for LPS27HHTWTR 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 MEMS sensors, microcontrollers, power ICs, and automotive-grade components for industrial, consumer, and automotive markets.
The LPS27HHTWTR belongs to ST's high-reliability MEMS pressure sensor product line, engineered specifically for compact, battery-constrained, and environmentally harsh applications requiring certified water resistance and factory-calibrated digital output.
FAQ
What is the maximum overpressure rating and how is water resistance validated?
The LPS27HHTWTR is rated for 1 MPa (10 ATM) overpressure and validated per internal ST test protocols for 10 ATM static pressure endurance. Its water resistance stems from a combination of a grounded metal lid, proprietary potting gel (permeability <7 g/m²·24 hr), and hermetic ceramic cavity sealing - proven against chlorine, bromine, detergents, and fuel exposure per DS13489 Section 4.4.
How does the FIFO reduce system power consumption in wearable applications?
The 128-slot FIFO allows the host MCU to enter deep sleep between bursts of sensor data reads. With ODR set to 10 Hz and FIFO configured in Continuous (Dynamic-Stream) mode, the MCU wakes only when INT_DRDY asserts - reducing active time by >90% versus continuous polling. This cuts average system current by ~30% in typical wrist-worn deployments.
Can the LPS27HHTWTR operate with separate VDD and Vdd_IO supplies, and what are the implications?
Yes - VDD (1.7–3.6 V) powers the analog sensing chain and core logic, while Vdd_IO (1.7 V to VDD+0.1 V) powers interface I/O. This allows independent power sequencing: VDD can be disabled while retaining I²C communication via Vdd_IO, enabling partial system shutdown without bus lock-up. Decoupling capacitors must be placed separately on each rail.
What calibration data is stored internally and how is it applied during operation?
Factory-trimmed pressure and temperature compensation coefficients are stored in non-volatile memory and automatically loaded into working registers at power-on reset. These include sensitivity, offset, and TCO terms for both pressure and temperature channels - enabling ±0.5 hPa absolute accuracy and ±1.5 °C temperature accuracy without host-side calibration routines or NVM writes.
LPS27HHTWTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 10-FCLGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Pressure Type:
- Absolute
- Operating Pressure:
- 3.77PSI ~ 18.27PSI (26kPa ~ 126kPa)
- Output Type:
- I2C, SPI
- Output:
- 24 b
- Accuracy:
- ±0.01PSI (0.1kPa)
- Voltage - Supply:
- 1.7V ~ 3.6V
- Port Size:
- -
- Port Style:
- No Port
- Features:
- Temperature Compensated
- Termination Style:
- SMD (SMT) Tab
- Maximum Pressure:
- 145.04PSI (1000kPa)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-CCLGA (2.7x2.7)
LPS27HHTWTR FAQ
1.How can I place an order for LPS27HHTWTR through Aetrix?
Please submit a Request for Quotation (RFQ) for LPS27HHTWTR 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 LPS27HHTWTR reliable?
The price and inventory of LPS27HHTWTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPS27HHTWTR is usually 5 days.
3.What payment methods are accepted for LPS27HHTWTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPS27HHTWTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPS27HHTWTR?
LPS27HHTWTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPS27HHTWTR 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 LPS27HHTWTR?
For technical support, including LPS27HHTWTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPS27HHTWTR requirements.
6.How does Aetrix verify that LPS27HHTWTR is sourced from the original manufacturer or authorized distributors?
All LPS27HHTWTR 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 LPS27HHTWTR meets industry standards.
7.What is the process for return or replacement of LPS27HHTWTR?
All LPS27HHTWTR units undergo pre-shipment inspection (PSI). If there is an issue with LPS27HHTWTR, 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 LPS27HHTWTR part is unused and in its original packaging.
Return procedure for LPS27HHTWTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPS27HHTWTR Tags
-
DPS368XTSA1
Infineon Technologies
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DPS310XTSA1
Infineon Technologies
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LPS22HHTR
STMicroelectronics
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ICP-20100
TDK InvenSense
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ICP-10110
TDK InvenSense
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LPS22DFTR
STMicroelectronics
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LPS22HBTR
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BMP390
Bosch Sensortec
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BMP581
Bosch Sensortec
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BMP384
Bosch Sensortec
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2511020213301
Würth Elektronik
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ILPS22QSTR
STMicroelectronics
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