STMicroelectronics ILPS22QS Absolute Digital Output Barometer

STMicroelectronics ILPS22QS Absolute Digital Output Barometer is an ultra-compact piezoresistive absolute pressure sensor that operates as a digital output barometer. The ILPS22QS supports dual full-scale up to user-selectable 4060hPa. The ILPS22QS features ultra-low pressure noise with very low power consumption.


The STM ILPS22QS Absolute Digital Output Barometer combines a sensing element and an IC interface that communicates over I2C, MIPI I3CSM, or SPI interfaces from the sensing element to the application. The sensing element that detects absolute pressure consists of a suspended membrane manufactured using a dedicated process developed by ST.

The ILPS22QS is offered in a full-mold, holed LGA package (HLGA) and operates over an extended temperature range from -40°C to +105°C. The LGA package is holed to allow external pressure to reach the sensing element.



  • Selectable dual full-scale absolute pressure range
    • Mode 1 at 260hPa ~ 1260hPa
    • Mode 2 at 260hPa ~ 4060hPa
  • Current consumption down to 1.8µA
  • 0.5hPa absolute pressure accuracy
  • 0.34Pa low-pressure sensor noise
  • High-performance TCO at 0.45Pa/°C
  • Embedded temperature compensation
  • Extended temperature range from -40°C 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 analog hub for processing analog input data
  • Embedded Qvar for detecting electric charge variation
  • Interrupt functions: data-ready, FIFO flags, pressure thresholds
  • 1.7V to 3.6V supply voltage
  • 22,000g High shock survivability
  • Small and thin package
  • ECOPACK lead-free compliant


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


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