Features
• Selectable dual full-scale absolute pressure range
– Mode 1: 260 ~ 1260 hPa
– Mode 2: 260 ~ 4060 hPa
• Current consumption 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

Description
The ILPS22QS is an ultra-compact piezoresistive absolute pressure sensor which
functions as a digital output barometer, supporting dual full-scale up to userselectable
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.

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