Description：

The ILPS22QS is an ultracompact piezoresistive absolute pressure sensor that functions as a digital output barometer, supporting dual full-scale up to user-selectable 4060 hPa. The device delivers ultralow pressure noise with very low power consumption and operates over an extended temperature range from -40°C to +105°C.The device 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.

Features：

• Selectable dual full-scale absolute pressure range

– Mode 1: 260 ~ 1260 hPa

– Mode 2: 260 ~ 4060 hPa

• Supply current down to 1.8 µA

• Absolute pressure accuracy: 0.5 hPa

• Low pressure sensor noise: 0.34 Pa

• High-performance TCO: 0.45 Pa/°C

• Embedded temperature compensation

• Extended temperature range from -40 to +105°C

• 24-bit pressure data output

• ODR from 1 Hz to 200 Hz

• SPI, I²C or MIPI I3CSM interfaces

• Supports 1.08 V digital interface

• Embedded FIFO

• Embedded analog hub for processing analog input data

• Embedded Qvar for detecting electric charge variation

• Interrupt functions: data-ready, FIFO flags, pressure thresholds

• Supply voltage: 1.7 to 3.6 V

• High shock survivability: 22,000 g

• Small and thin package

• ECOPACK lead-free compliant

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