LPS331APY

Pressure Sensors Transducers Overview

The LPS331APY is an ultra-compact absolute piezoresistive pressure sensor manufactured by STMicroelectronics. It integrates a monolithic sensing element with an IC interface providing digital output via I2C or SPI protocols. The device features a 24-bit ADC and operates within a supply voltage range of 1.7V to 3.6V. It detects absolute pressures between 26kPa and 126kPa (3.77PSI to 18.27PSI). The sensor includes embedded temperature compensation and offers selectable output data rates from 1Hz to 25Hz. It is housed in a 16-VFLGA package designed for surface mount applications.

Pressure Sensors Transducers Feature Summary

• Integrates a monolithic piezoresistive sensing element with a CMOS interface circuit on a single silicon substrate
• Provides high-resolution digital output through standard I2C and SPI serial interfaces
• Includes embedded temperature compensation to ensure accuracy across operating conditions
• Supports selectable output data rates ranging from 1Hz to 25Hz for flexible system integration

Pressure Sensors Transducers Applications

• Barometric pressure measurement for weather forecasting and altitude estimation
• Indoor navigation systems requiring relative height detection
• Smart metering applications for gas and water utility monitoring
• Wearable health devices tracking altitude changes during physical activity

Pressure Sensors Transducers Procurement Notes

Verify the specific suffix 'PY' against the manufacturer's official datasheet to confirm pinout and packaging details, as suffixes often indicate tape-and-reel configurations or specific material grades. Confirm RoHS compliance status and check for obsolescence notices, as this component may be subject to production lifecycle changes. Ensure the selected variant matches the required interface voltage levels and package dimensions for your PCB design.

Pressure Sensors Transducers Selection Notes

Select this component when a compact solution for absolute pressure sensing is required with integrated signal conditioning. The built-in temperature compensation reduces the need for external calibration, simplifying system design. Consider the low power consumption modes if battery life is critical. Verify that the 16-VFLGA package size fits within the available board space and that the I2C/SPI interface compatibility aligns with the host microcontroller.

Pressure Sensors Transducers Part Context

The LPS331APY belongs to the LPS331 family of MEMS pressure sensors from STMicroelectronics. This family is designed for barometric pressure and temperature sensing applications. The LPS331AP variant specifically targets absolute pressure measurement. The 'Y' suffix typically denotes a specific tape-and-reel packaging option for automated assembly. These sensors are part of ST's broader environmental sensor portfolio aimed at IoT and mobile applications.

Pressure Sensors Transducers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult the manufacturer's official replacement guide or distributor databases for current alternatives. Verify electrical parameters and pin compatibility before considering any cross-reference components.