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Water-Resistant MEMS Pressure Sensor from STMicroelectronics Targets Budget-Conscious Consumer and Industrial Applications


Geneva, Switzerland – WEBWIRE

Geneva, March 12, 2019 -- 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 unique properties of STs proprietary gel formula, together with the sensors 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 0C to 65C.

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

The LPS33W is in mass production now, in a 3.3mm-diameter x 2.9mm cylindrical metal case, priced from $3.60 for orders of 1000 pieces.

For more information please go to www.st.com/lps33w-pr


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 MEMS
 pressure sensor
 wearables
 IoT


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