Overview
The LPS331APY, produced by STMicroelectronics, is an ultra-compact absolute pressure sensor designed for a wide range of applications. This MEMS pressure sensor features a monolithic sensing element and an IC interface, enabling it to provide a digital signal output. The sensing element is realized inside a single mono-silicon substrate using ST's proprietary VENSENS process, which ensures high accuracy and reliability. The device is packaged in a small holed cap land grid array (HCLGA) package, allowing external pressure to reach the sensing element.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | 85 | °C | |
| Full Accuracy Temperature Range | 0 | 80 | °C | |
| Operating Pressure Range | 260 | 1260 | mbar | |
| Pressure Output Data | 24 | bits | ||
| Pressure Sensitivity | 4096 | LSB/mbar | ||
| Relative Accuracy over Pressure | ±0.1 | ±0.2 | mbar | |
| Absolute Accuracy Pressure over Temperature | -3.2 | 2.6 | mbar | |
| Supply Voltage | 1.71 | 3.6 | V | |
| Supply Current @ ODRp 1 Hz and ODRt 1 Hz | 5.5 | 30.0 | µA | |
| Power-Down Mode Supply Current | 0.5 | µA | ||
| Overpressure Capability | 20x full scale | bar | ||
| Shock Survivability | 10,000 g | |||
| Interfaces | SPI and I2C |
Key Features
- High-resolution mode: 0.020 mbar RMS
- Low power consumption: 5.5 µA in low resolution mode and 30 µA in high resolution mode
- High overpressure capability: 20x full scale
- Embedded temperature compensation
- Embedded 24-bit ADC
- Selectable ODR from 1 Hz to 25 Hz
- SPI and I2C interfaces
- Supply voltage: 1.71 to 3.6 V
- High shock survivability: 10,000 g
- Small and thin package: HCLGA-16L (3 x 3 x 1 mm)
- ECOPACK® lead-free compliant
Applications
- Indoor and outdoor navigation
- Enhanced GPS for dead-reckoning
- Altimeter and barometer for portable devices
- Weather station equipment
- Sport watches
Q & A
- What is the operating temperature range of the LPS331APY?
The operating temperature range is from -40°C to +85°C.
- What is the pressure range of the LPS331APY?
The pressure range is from 260 mbar to 1260 mbar.
- What are the available interfaces for the LPS331APY?
The device supports both SPI and I2C interfaces.
- What is the power consumption in high resolution mode?
The power consumption in high resolution mode is 30 µA.
- Does the LPS331APY have embedded temperature compensation?
Yes, it has embedded temperature compensation.
- What is the resolution of the pressure output data?
The pressure output data is 24 bits.
- Is the LPS331APY shock resistant?
Yes, it has high shock survivability up to 10,000 g.
- What is the package type and dimensions of the LPS331APY?
The package type is HCLGA-16L, and the dimensions are 3 x 3 x 1 mm.
- Is the LPS331APY lead-free compliant?
Yes, it is ECOPACK® lead-free compliant.
- What are some typical applications of the LPS331APY?
Typical applications include indoor and outdoor navigation, enhanced GPS, altimeters, barometers, weather station equipment, and sport watches.
