STMicroelectronics ILPS22QS

The ILPS22QS is an ultra-compact piezoresistive absolute pressure sensor which functions as a digital output barometer, supporting dual full-scale up to user-selectable 4060 hPa. The device delivers ultra-low pressure noise with very low power consumption and operates over an extended temperature range from -40 °C to +105 °C. The ILPS22QS comprises a sensing element and an IC interface which communicates over I²C, MIPI I3CSM or SPI interfaces from the sensing element to the application and supports 1.2 V digital interface as well. The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by ST. The ILPS22QS embeds an analog hub sensing functionality which is able to connect an analog input and convert it to a digital signal for embedded processing. In addition, an embedded Qvar (electric charge variation detection) channel can be enabled for sensing in applications such as water leakage detection, tap, double tap, long press, and L/R - R/L swipe. The ILPS22QS is available in a full-mold, holed LGA package (HLGA). The package is holed to allow external pressure to reach the sensing element.

Key features

• Selectable dual full-scale absolute pressure range 260 ~ 1260hPa (mode1), 260 ~ 4060hPa (mode2)
• Current consumption down to 1.8µA, absolute pressure accuracy is 0.5hPa
• Low pressure sensor noise is 0.34Pa, high-performance TCO is 0.45Pa/°C
• Embedded temperature compensation, extended temperature range from -40 to +105°C
• 24-bit pressure data output, ODR from 1Hz to 200Hz
• SPI, I²C or MIPI I3CSM interfaces, supports 1.08V digital interface
• Embedded FIFO, embedded analogue hub for processing analogue input data
• Embedded Qvar for detecting electric charge variation, supply voltage is 1.7 to 3.6V
• Interrupt functions: data-ready, FIFO flags, pressure thresholds
• High shock survivability is 22000g, HLGA-10L package

Applications

• Industrial applications
• Gas and water metering
• Weather station equipment
• Altimeters and barometers for outdoor devices
• Smart filters
• Ventilators and CPAP equipment
• Man-down detection

Available tools

STEVAL-MKI228KA:

Pressure sensor kit with Qvar functionality based on ILPS22QS

The STEVAL-MKI228KA evaluation kit consists of the STEVAL-MKI228A and the STREVAL-MKE001A. The STEVAL-MKI228A mounts the ILPS22QS pressure sensor with the Qvar electrostatic sensor and swipe electrode to make it compatible with the STEVAL-MKI109V3.

Data brief

Videos

Air pressure monitoring with ILPS22QS