STMicroelectronics ILPS22QS
Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with embedded Qvar electrostatic sensor
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.
Key features
- Selectable dual full-scale absolute pressure range
- Current consumption down to 1.8 µA
- Absolute pressure accuracy: 0.5 hPa
- Low pressure sensor noise: 0.34 Pa
Additional 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
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
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. The ILPS22QS is soldered exactly at the board center. The STEVAL-MKE001AA can be plugged into a standard DIL24 socket
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