STMicroelectronics Introduces Industry's First MEMS Waterproof Pressure Sensor

【Lansheng Technology Information】STMicroelectronics has launched the first MEMS waterproof/liquid-proof absolute pressure sensor in the industrial market, which is included in the ten-year supply guarantee plan.

Simone Ferri, General Manager of the AMS MEMS Sub-Product Division at STMicroelectronics, said: "As the Industrial Internet of Things grows and spreads, companies are looking to collect data throughout their operations, often in challenging indoor and outdoor environments. Our latest The MEMS waterproof pressure sensor is weather-resistant enough to meet various industrial digital transformation requirements, and provides a long-term supply guarantee to protect customer designs."

The new ILPS28QSW sensor from STMicroelectronics is housed in a hermetically sealed cylindrical surface-mount package. The package protects the internal circuitry with a highly liquid impermeable ceramic substrate and a robust automotive potting compound. The lid is made of high-grade surgical steel, sealed with an O-ring and secured with epoxy adhesive. This unique package design ensures water resistance to IP58 rating, impermeability in more than one meter of water, and is IEC 60529 and ISO 20653 certified. In addition, the sensor can withstand overpressures up to 10 bar.

ILPS28QSW can measure absolute pressure with an accuracy of less than 0.5hPa, two ranges of 260-1260hPa and 260-4060hPa are optional, and the working temperature range is extended to -40°C to 105°C. High accuracy and excellent weather resistance make it suitable for applications such as gas meters, water meters, weather monitors, smart filters for air conditioners, and home appliances.

ILPS28QSW also features ST's unique Qvar® electrostatic charge sensing channel, developers can use this technology to create more value in practical applications, such as liquid leak detection and other functions. Combined with a pressure signal, the Qvar can monitor liquid levels and even detect the smallest leaks in household appliances and industrial processes.

With an operating current as low as 1.7µA, the ILPS28QSW can be used in power-sensitive applications, and the on-chip integrated digital functions simplify system design management. The sensor has built-in temperature compensation, FIFO memory and I2C/MIPI-I3C digital communication interface, and the output data rate is selectable in the range of 1Hz to 200Hz.

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