STMicroelectronics, a global semiconductor supplier serving customers across the spectrum of electronics applications, has launched the market's first waterproof/liquid-tight MEMS absolute pressure sensor with a stated 10-year longevity program for the industrial market.
“With the spread of the Industrial Internet of Things, companies are looking to collect data from across their operations, often in challenging environments, both internal and external,” said Simone Ferri, GM, AMS MEMS Subgroup, STMicroelectronics. “Our latest waterproof MEMS pressure sensors provide the environmental robustness needed to drive digital transformation everywhere, with the long-term availability needed to protect customer projects.”
ST's new ILPS28QSW sensor comes in a sealed, cylindrical, surface-mountable package. It has a ceramic substrate that provides high resistance to liquid permeability and a robust encapsulation gel, proven in automotive applications, to protect internal circuits.
The lid, made of high-quality surgical steel, is sealed with an o-ring and secured with epoxy adhesive. This unique packaging design guarantees an ingress protection rating of IP58 to withstand immersion in more than one meter of water, certified to IEC 60529 and ISO 20653.
Furthermore, the sensor can sustain overpressure of up to 10Bar.
The ILPS28QSW provides absolute pressure readings, accurate to 0.5hPa, with a selectable full scale range of 260-1260hPa and 260-4060hPa, and has a wide operating temperature range, -40° to 105°C. environmental robustness are suitable for applications such as gas and water measuring equipment, weather monitors, smart air conditioning filters and household appliances.
Also featuring ST's exclusive Qvar electrostatic charge detection channel, the ILPS28QSW allows developers to create additional value in their applications through features such as liquid leak detection. Qvar combined with the pressure signal allows monitoring of liquid level and even the smallest leaks in household appliances and industrial processes.
With operating current as low as 1.7µA, enabling use in power-hungry applications, the ILPS28QSW integrates digital features that simplify system design and management. Temperature compensation, FIFO memory and an I2C/MIPI-I3C digital communications interface are all integrated and the output data rate is selectable from 1 Hz to 200 Hz.
