Overview
The SHT20 humidity and temperature sensor from Sensirion AG is a highly regarded industry standard for its form factor and intelligence. It is embedded in a reflow solderable Dual Flat No leads (DFN) package with a footprint of 3 x 3mm and a height of 1.1mm. This sensor provides fully calibrated, linearized sensor signals in digital I2C format. The SHT20 features a generation 4C CMOSens® chip, which includes a capacitive relative humidity sensor, a band gap temperature sensor, an amplifier, A/D converter, OTP memory, and a digital processing unit.
Key Specifications
| Parameter | Min | Max | Units | Description |
|---|---|---|---|---|
| Supply Voltage (VDD) | 1.5 | 3.6 | V | Operating voltage range |
| Humidity Measuring Range | 0 | 100 | %RH | Relative humidity measurement range |
| Temperature Range | -40 | 105 | °C | Operating temperature range |
| Humidity Accuracy | - | ±3% RH | - | Accuracy of humidity measurement |
| Temperature Accuracy | - | ±0.5°C | - | Accuracy of temperature measurement |
| Power Consumption | - | 2.7 μW | - | Maximum power consumption during I2C communication |
| Measurement Time | - | 50 ms | - | Time required for a measurement |
| Response Time | - | 5 s | - | Response time for humidity measurements |
| Storage Temperature | -40 | 125 | °C | Temperature range for storage |
| Package Type | - | DFN-6 | - | Type of package |
| Dimensions | - | 3 x 3 mm | - | Footprint of the package |
| Height | - | 1.1 mm | - | Height of the package |
Key Features
- High Accuracy: Measures temperature with an accuracy of ±0.5°C and humidity with an accuracy of ±3% RH.
- Compact Design: Housed in a compact DFN6 package, making it suitable for small form factor designs.
- Low Power Consumption: Consumes low power, ideal for battery-powered devices or applications where power efficiency is crucial.
- Wide Operating Temperature Range: Operates efficiently between -40°C and +125°C, making it suitable for various environmental conditions.
- Digital Output: Provides calibrated, linearized sensor signals in digital I2C format.
- Excellent Long-term Stability: Ensures reliable and consistent measurements over time.
- RoHS and WEEE Compliant: Free of Pb, Cd, and Hg, making it environmentally friendly.
Applications
- Industrial Automation Systems: Used for precise environmental monitoring and control in industrial settings.
- HVAC Control Systems: Utilized for heating, ventilation, and air conditioning systems to maintain optimal environmental conditions.
- Weather Stations: Ideal for accurate temperature and humidity measurements in weather monitoring applications.
- Battery-Powered Devices: Suitable due to its low power consumption, making it ideal for devices that require efficient energy use.
- Air Quality Monitoring Systems: Used to monitor and control humidity and temperature in air quality monitoring systems).
Q & A
- What is the operating voltage range of the SHT20 sensor?
The SHT20 operates within a supply voltage range of 1.5V to 3.6V).
- What is the humidity measurement range of the SHT20?
The SHT20 measures relative humidity from 0% to 100% RH).
- What is the temperature measurement range of the SHT20?
The SHT20 measures temperature from -40°C to +105°C).
- How accurate is the humidity measurement of the SHT20?
The humidity measurement accuracy of the SHT20 is ±3% RH).
- How accurate is the temperature measurement of the SHT20?
The temperature measurement accuracy of the SHT20 is ±0.5°C).
- What is the power consumption of the SHT20 during I2C communication?
The maximum power consumption during I2C communication is 2.7 μW).
- What is the measurement time for the SHT20?
The measurement time for the SHT20 is 50 ms).
- What is the response time for humidity measurements of the SHT20?
The response time for humidity measurements is 5 seconds).
- Is the SHT20 RoHS and WEEE compliant?
Yes, the SHT20 is fully RoHS and WEEE compliant, free of Pb, Cd, and Hg).
- What type of package does the SHT20 come in?
The SHT20 comes in a DFN-6 package).
