MEMS pressure sensor designed for industrial applications

Posted By : Lanna Cooper
MEMS pressure sensor designed for industrial applications

 

The STMicroelectronics LPS33W water-resistant MEMS pressure sensor combines chemical compatibility, stability, and accuracy for use in a wide range of applications such as fitness trackers and other wearables, vacuum cleaners, and general-purpose industrial sensing.

Protected by a viscous potting gel inside the cylindrical metal package, the IPx8-rated LPS33W withstands salt water, chlorine, bromine, detergents such as hand soap and shampoo, e-liquids, and light industrial chemicals such as n-pentane.

The package lid provides high corrosion resistance, and the cylindrical form factor is easy to use with o-rings in applications that require a sealed enclosure.

The properties of ST’s proprietary gel formula, together with the sensor’s built-in signal-conditioning ASIC, ensure class-leading 0.008hPa RMS pressure noise thereby allowing outstanding measurement resolution.

Susceptibility to reflow-soldering stress during assembly is also extremely low, drifting less than ±2hPa and recovering normal accuracy in 72 hours; more than twice the speed of other sensors. Temperature compensation keeps accuracy within ±3hPa over the operating range from 0°C to 65°C.

The LPS33W operates at just 15µA in high performance mode, with a 3µA low power mode and 1µA power-down to help maximise runtime of battery-powered devices. A 128-bit FIFO stores up to 40 slots of 32-bit pressure and temperature data, helping save extra power by minimising intervention from the host microcontroller. A low pass filter and I2C and SPI digital interfaces are also built-in.

Downloads


You must be logged in to comment

Write a comment

No comments




Sign up to view our publications

Sign up

Sign up to view our downloads

Sign up

Hannover Fair 2019
1st April 2019
Germany Hannover
The Security Event 2019
9th April 2019
United Kingdom NEC, Birmingham
Ceramics Expo 2019
29th April 2019
United States of America International Exposition Center (I-X Center)
Electronics & Applications 2019
14th May 2019
Netherlands Jaarbeurs Utrecht Hall 7 Jaarbeursplein
Agile for Automotive 2019
15th May 2019
United States of America Detroit, MI