LPS33HWTR

Pressure Sensors Transducers Overview

The STMicroelectronics LPS33HWTR is an ultra-compact piezoresistive pressure sensor functioning as a digital output barometer. It integrates a sensing element and signal conditioning IC within a 10-pin CCLGA package. The device measures absolute pressure across a range of 26 kPa to 126 kPa, corresponding to altitudes from sea level to approximately 9 km. It features high accuracy with a typical offset error of ±0.1 kPa and includes built-in temperature compensation. The sensor supports I²C and SPI digital interfaces and operates on a supply voltage between 1.7 V and 3.6 V. Designed for board-mount applications, it offers water-resistant properties suitable for environmental monitoring.

Pressure Sensors Transducers Feature Summary

• Ultra-compact piezoresistive design integrating sensing element and signal conditioning
• Digital output barometer with absolute pressure measurement capability
• Built-in temperature compensation for enhanced accuracy
• Water-resistant construction suitable for harsh environments

Pressure Sensors Transducers Applications

• Altitude tracking in wearable devices
• Indoor navigation systems
• Weather station sensors
• Smartphone and tablet altitude detection

Pressure Sensors Transducers Procurement Notes

Verify the specific ordering suffix matches the required tape and reel configuration for automated assembly. Confirm that the component grade aligns with the intended operational temperature range and humidity exposure requirements. Cross-reference the datasheet revision date to ensure compatibility with existing firmware drivers and calibration algorithms used in the final product design.

Pressure Sensors Transducers Selection Notes

Select this component when a small form factor is critical for integration into portable electronics or wearables. Consider the LPS33HWTR for applications requiring precise altitude changes rather than absolute pressure stability over long periods. Evaluate the power consumption profiles against battery life constraints, noting the standby current specifications. Ensure the host microcontroller supports the required I²C or SPI communication protocols at the specified voltage levels.

Pressure Sensors Transducers Part Context

The LPS33HWTR belongs to STMicroelectronics' family of MEMS pressure sensors designed for consumer electronics. It succeeds earlier models by offering improved accuracy and lower power consumption while maintaining a similar footprint. This series is widely adopted in mobile devices for barometric functions. The TR suffix indicates the standard tape and reel packaging format used for high-volume surface mount manufacturing processes.

Pressure Sensors Transducers Replacement Considerations

Direct replacements include other STMicroelectronics MEMS barometers such as the LPS22HB or LPS25H, provided interface compatibility and pinout alignment are verified. Alternative manufacturers may offer similar absolute pressure sensors, but mechanical dimensions and electrical characteristics must be strictly compared to ensure functional equivalence without redesigning the PCB layout.