Overview
The ILPS22QSTR is an ultra-compact piezoresistive absolute pressure sensor produced by STMicroelectronics. It functions as a digital output barometer, supporting dual full-scale pressure ranges up to user-selectable 4060 hPa. This sensor integrates a sensing element and an IC interface, enabling communication over I²C, MIPI I3CSM, or SPI interfaces. It also supports a 1.2V digital interface. The device features an embedded Qvar (electric charge variation detection) channel for various sensing applications such as water leakage detection, tap, double tap, long press, and swipe gestures.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| Operating Temperature Range | -40 | +105 | °C | |
| Operating Pressure Range | 260 | 4060 | hPa | |
| Pressure Output Data | 24 bits | |||
| Pressure Sensitivity | 4096 (Mode 1) | 2048 (Mode 2) | LSB/hPa | |
| Relative Pressure Accuracy | ±0.015 (Mode 1) | ±1 (Mode 2) | hPa | |
| Absolute Pressure Accuracy | ±0.5 (Mode 1) | ±1 (Mode 2) | hPa | |
| RMS Pressure Noise | 0.34 (Mode 1) | 0.57 (Mode 2) | Pa | |
| Pressure Output Data Rate | 1 | 200 | Hz | |
| Supply Voltage | 1.7 | 3.6 | V | |
| IO Supply Voltage | 1.08 | 3.6 | V | |
| Package | HLGA-10L (2.0 x 2.0 x 0.73 mm) |
Key Features
- Ultra-compact piezoresistive absolute pressure sensor with dual full-scale pressure ranges up to 4060 hPa.
- Communication over I²C, MIPI I3CSM, or SPI interfaces.
- Supports 1.2V digital interface.
- Embedded Qvar (electric charge variation detection) channel for applications like water leakage detection, tap, double tap, long press, and swipe gestures.
- Analog hub sensing functionality to connect an analog input and convert it to a digital signal for embedded processing.
- Low power consumption and ultra-low pressure noise.
- Extended temperature range from -40 °C to +105 °C.
- Data-ready signal to indicate when new pressure and temperature data are available.
- Factory calibration with trimming values stored in non-volatile memory.
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.
Q & A
- What is the operating temperature range of the ILPS22QSTR?
The operating temperature range is from -40 °C to +105 °C.
- What are the supported communication interfaces for the ILPS22QSTR?
The device supports I²C, MIPI I3CSM, and SPI interfaces.
- What is the pressure sensitivity of the ILPS22QSTR in different modes?
In Mode 1, the pressure sensitivity is 4096 LSB/hPa, and in Mode 2, it is 2048 LSB/hPa.
- What is the relative pressure accuracy of the ILPS22QSTR?
The relative pressure accuracy is ±0.015 hPa in Mode 1 and ±1 hPa in Mode 2.
- What is the package type and dimensions of the ILPS22QSTR?
The package type is HLGA-10L, with dimensions of 2.0 x 2.0 x 0.73 mm.
- Does the ILPS22QSTR support analog input conversion?
- What are some typical applications of the ILPS22QSTR?
- How does the ILPS22QSTR handle data synchronization?
- Is the ILPS22QSTR factory calibrated?
- What is the purpose of the Qvar channel in the ILPS22QSTR?
