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ILPS28QSW Dataheets PDF



Part Number ILPS28QSW
Manufacturers STMicroelectronics
Logo STMicroelectronics
Description absolute digital output barometer
Datasheet ILPS28QSW DatasheetILPS28QSW Datasheet (PDF)

ILPS28QSW Datasheet Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package Features • Dual full-scale absolute pressure sensor in a water-resistant package – Mode 1: 260 ~ 1260 hPa – Mode 2: 260 ~ 4060 hPa • Embedded analog hub for processing analog input data • Embedded Qvar for detecting electric charge variation • Current consumption down to 1.7 μA • Absolute pressure accuracy: 0.5 hPa • Low pressure sensor noise: 0..

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ILPS28QSW Datasheet Dual full-scale, 1260 hPa and 4060 hPa, absolute digital output barometer with Qvar detection in a water-resistant package Features • Dual full-scale absolute pressure sensor in a water-resistant package – Mode 1: 260 ~ 1260 hPa – Mode 2: 260 ~ 4060 hPa • Embedded analog hub for processing analog input data • Embedded Qvar for detecting electric charge variation • Current consumption down to 1.7 μA • Absolute pressure accuracy: 0.5 hPa • Low pressure sensor noise: 0.32 Pa • Embedded temperature compensation • Extended temperature range from -40 to +105 °C • 24-bit pressure data output • ODR from 1 Hz to 200 Hz • I²C or MIPI I3CSM interface • Embedded FIFO • Supply voltage: 1.7 to 3.6 V • Easily sealed package with O-ring • ECOPACK lead-free compliant Product status link ILPS28QSW Product summary Order code ILPS28QSWTR Temperature range -40 to +105 °C Package CCLGA-7L 2.8 x 2.8 x 1.95 mm Packing Tape and reel Product resources TN0018 (design and soldering) Product labels 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 Description The ILPS28QSW is an ultracompact, piezoresistive, absolute pressure sensor that functions as a digital output barometer, supporting dual full-scale up to userselectable 4060 hPa. The device comprises a sensing element and an IC interface that communicates over the I²C or MIPI I3CSM interface from the sensing element to the application. The ILPS28QSW provides lower power consumption, achieving lower pressure noise than its predecessor. The ILPS28QSW embeds an analog hub sensing functionality that 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-leak detection, tap, double tap, long press, and L/R - R/L swipe. DS13905 - Rev 1 - January 2023 For further information contact your local STMicroelectronics sales office. www.st.com ILPS28QSW The ILPS28QSW is available in a ceramic LGA package with metal lid. It is guaranteed to operate over a temperature range extending from -40 °C to +105 °C. The package is holed to allow external pressure to reach the sensing element. Gel inside the IC protects the electrical components from water and the metal cap is, optionally, connected to ground or left floating electrically in the application PCB layout. The connection of the metal cap is determined according to the customer’s target application. DS13905 - Rev 1 page 2/52 1 Block diagrams Figure 1. Device architecture block diagram Temperature Sensor ILPS28QSW Block diagrams MUX Analog Front-End ADC Digital Logic I2C / MIPI I3CSM Sensing Element Qvar / Analog input Sensor Bias Voltage and Current Bias Clock and timing Analog Front-End ADC AVG Filter Figure 2. Digital logic Pressure Compensation Temperature Compensation EN_LPFP LP Filter 1 POUT 0 FIFO Output Registers TOUT Output Registers I2C / MIPI I3CSM DS13905 - Rev 1 page 3/52 ILPS28QSW Pin description 2 Pin description Figure 3. Pin connections (bottom view) SDA 1 1 VDD 6 2 AH1/QVAR1 7 GND 5 3 SCL 4 AH2/QVAR2 Pin number 1 2 3 4 5 6 7 Name SDA AH1/QVAR1 SCL AH2/QVAR2 GND VDD PAD2LID Table 1. Pin description Function I²C / MIPI I3CSM serial data (SDA) Connect to GND if analog input / Qvar sensing is not needed. I²C / MIPI I3CSM serial clock (SCL) Connect to GND if analog input / Qvar sensing is not needed. 0 V supply Power supply Pad connection to metal lid DS13905 - Rev 1 page 4/52 3 3.1 Mechanical and electrical specifications ILPS28QSW Mechanical and electrical specifications Mechanical characteristics VDD = 1.8 V, T = 25 °C, unless otherwise noted. Table 2. Pressure and temperature sensor characteristics Symbol Parameter Pressure sensor characteristics PTop Pop Operating temperature range Operating pressure range Mode 1 Mode 2 Pbits Pressure output data Psens Pressure sensitivity Mode 1 Mode 2 PAccRel Relative pressure accuracy(2) Mode 1 Mode 2 Test condition Min. Typ.(1) Max. Unit -40 +105 °C 260 1260 hPa 260 4060 24 bits T =25 °C P= 800 ~ 1100 hPa P = 2060 ~ 4060 hPa 4096 2048 ±0.015 ±1 LSB/hPa hPa PAccT Pnoise Absolute pressure accuracy Mode 1 Mode 2 Refer to Table 3 RMS pressure sensing noise(3) Mode1 Mode 2 Refer to Table 25 ODRPres Pressure output data rate P_longterm Pressure accuracy, long-term stability(4) P_drift Soldering drift Temperature sensor characteristics Top Operating temperature range Tsens Temperature sensitivity P = 660 ~ 1260 T = 0 ~ 65 °C T = -40 ~ 105 °C P = 1260 ~ 4060 hPa T = 0 ~ 65 °C T = -20 ~ 105 °C T = 25 °C ±1 ±2.5 ±0.43% ±0.6% 0.32 0.57 1 4 10 25 50 75 100 200.


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