대기압 측정 센서 -ILPS22QS
(BAROMETER 8 CLICK)
개요
- 본 제품은 대기압 측정 센서 -ILPS22QS 입니다.
- ILPS22QS 칩을 기반으로 디자인된 제품입니다.
- 대기압을 24비트 디지털 값을 출력하며, I2C 및 SPI 인터페이스를 지원합니다.
- 3.3V 시스템과 사용이 가능합니다.
특징
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HOW DOES IT WORK?
Barometer 8 Click as its foundation uses the ILPS22QS, a high-accuracy absolute pressure sensor that functions as a digital output barometer from STMicroelectronics. The ILPS22QS delivers ultra-low pressure noise with low power consumption and operates over an extended temperature range from -40°C to +105°C. It has a selectable dual full-scale absolute pressure range, from 260 up to 1260hPa or 4060hPa, with an accuracy of 0.5hPa, ideally suited to the harsh environmental conditions in industrial and consumer applications.
The ILPS22QS comprises a sensing element based on a piezoresistive Wheatstone bridge approach and an IC interface that provides a digital signal from the sensing element to the application. The sensing element, which detects absolute pressure, consists of a suspended membrane manufactured using a dedicated process developed by ST. A silicon spring structure surrounds this silicon membrane, and it contributes to isolating the membrane from mechanical and thermal stress in applications. When pressure is applied, the membrane deflection induces an imbalance in the Wheatstone bridge piezoresistance, whose output signal is converted by the selected interface.
This Click board™ allows using both I2C and SPI interfaces with a maximum frequency of 1MHz for I2C and 8MHz for SPI communication. The selection can be made by positioning SMD jumpers labeled as COMM SEL to an appropriate position. Note that all the jumpers' positions must be on the same side, or the Click board™ may become unresponsive.
This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
Type Pressure Applications Can be used for various pressure-based applications, industrial, consumer, weather stations, and more On-board modules ILPS22QS - high-accuracy absolute pressure sensor that functions as a digital output barometer from STMicroelectronics Key Features Low power consumption, selectable dual full-scale absolute pressure range, low pressure sensor noise, high-performance, embedded temperature compensation, extended temperature range, and more Interface I2C,SPI Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V