SHT40 온습도 센서 -I2C
(TEMP&HUM 15 CLICK)
개요
- 본 제품은 SHT40 온습도 센서입니다.
- Sensirion사의 SHT40 온습도 센서를 장착한 제품으로 초저전력 16비트 습도 온도 센서입니다.
- 0.1도의 온도 측정 정확성을 가지고 있으며 5-60도에서 20-80%RH의 습도 측정 범위를 가지고 있습니다.
- I2C 인터페이스를 지원합니다.
특징
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Description Min Typ Max Unit Supply Voltage 3.3 - 5 V Temperature Accuracy - ±0.2 - °C Relative Humidity Accuracy - ±1.8 - %RH Resolution - 0.01 - %RH Operating Humidity Range 0 - 100 %RH Operating Temperature Range -40 +25 +125 °C -
Temp&Hum 15 Click as its foundation uses the SHT40, high-accuracy ultra-low-power 16-bit relative humidity and temperature sensor from Sensirion. The SHT40 builds on a wholly new and optimized CMOS chip that offers reduced power consumption and improved accuracy specifications. It provides a fully calibrated digital I2C Fast Mode Plus interface for the fastest data transfer. It covers extended operating humidity and temperature ranges from 0 to 100%RH and from -40°C to 125°C with accuracies of ±1.8%RH and ±0.2°C. The SHT40 also has a power-trimmed internal heater which can be used at three heating levels enabling sensor operation in demanding environments.
The sensor shows the best performance when operated within the recommended average temperature and humidity range of 5-60°C and 20-80%RH. Long-term exposure to conditions outside recommended normal range, especially at high relative humidity, may temporarily offset the RH signal. After returning to the recommended average temperature and humidity range, the sensor will recover to within specifications by itself.
Temp&Hum 15 Click communicates with MCU using standard I2C 2-Wire interface. Since the sensor for operation requires a 3.3V logic voltage level only, this Click board™ also features the PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly.
This Click board™ can operate with both 3.3V and 5V logic voltage levels selected via the VIO SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the I2C communication lines properly. However, the Click board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development