Overview
The LPS27HHTWTR from STMicroelectronics is an ultra-compact piezoresistive absolute pressure sensor that functions as a digital output barometer. It is designed to provide high-resolution pressure measurements and includes an embedded temperature sensor to monitor ambient temperature. The sensor is packaged in a ceramic LGA package with a metal lid, ensuring water resistance and robustness against electrostatic discharge (ESD). This device is particularly suitable for applications requiring precise pressure and temperature measurements in various environmental conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Pressure Range | 260 - 1260 | hPa |
| Pressure Output Data | 24 bits | |
| Pressure Sensitivity | 4096 LSB/hPa | |
| Absolute Pressure Accuracy | ±0.5 hPa | |
| Pressure Noise | 0.7 Pa | |
| Temperature Accuracy | ±1.5 °C | |
| Output Data Rate (ODR) | 1 Hz to 200 Hz | |
| Communication Interfaces | SPI, I²C, MIPI I3CSM | |
| Supply Voltage | 1.7 to 3.6 V | |
| Operating Temperature Range | -40 to +85 °C | |
| Package Type | Ceramic LGA-10L |
Key Features
- Water-resistant package with potting gel and grounded metal cap for enhanced robustness.
- Embedded temperature sensor for ambient temperature monitoring.
- High-resolution 24-bit pressure data output.
- Low power consumption, down to 4 µA at 1 Hz ODR.
- Support for SPI, I²C, and MIPI I3CSM communication interfaces.
- Embedded FIFO with 128 slots for efficient data handling.
- Interrupt functions for Data-Ready, FIFO flags, and pressure thresholds.
- ECOPACK lead-free compliant.
Applications
- Altimeters and barometers for portable devices.
- GPS applications.
- Weather station equipment.
- Sport watches.
- E-cigarettes.
- Water depth monitoring.
- Gas metering.
Q & A
- What is the operating pressure range of the LPS27HHTWTR?
The operating pressure range is from 260 to 1260 hPa.
- What is the resolution of the pressure output data?
The pressure output data is 24 bits.
- What are the supported communication interfaces?
The device supports SPI, I²C, and MIPI I3CSM interfaces.
- What is the supply voltage range for the LPS27HHTWTR?
The supply voltage range is from 1.7 to 3.6 V.
- What is the operating temperature range of the device?
The operating temperature range is from -40 to +85 °C.
- Does the LPS27HHTWTR have an embedded temperature sensor?
- What is the purpose of the FIFO in the LPS27HHTWTR?
The FIFO (First-In-First-Out) buffer stores pressure and temperature output values, allowing for efficient power saving and data handling.
- Is the LPS27HHTWTR water-resistant?
- What are some typical applications of the LPS27HHTWTR?
Typical applications include altimeters, barometers, GPS devices, weather stations, sport watches, e-cigarettes, water depth monitoring, and gas metering.
- How does the device handle interrupts?
The device features interrupt functions for Data-Ready, FIFO flags, and pressure thresholds, which can be configured through the INTERRUPT_CFG register.
