Datasheet SHT20 (Sensirion) - 2

Sensor Performance Relative Humidity1234 Table 1
Electrical specification. For absolute maximum Parameter Condition Value Units values see Section 4.1 of Users Guide. 12 bit 0.04 %RH
Temperature567
Resolution 1 8 bit 0.7 %RH Parameter Condition Value Units Accuracy typ 3.0 %RH 14 bit 0.01 °C tolerance 2 max see Figure 2 %RH Resolution 1 12 bit 0.04 °C Repeatability 0.1 %RH Accuracy typ 0.3 °C Hysteresis 1 %RH tolerance 2 max see Figure 3 °C Nonlinearity <0.1 %RH Repeatability 0.1 °C Response time 3  63% 8 s Operating Range extended 4 -40 t0 125 °C Operating Range extended 4 0 to 100 %RH Response Time 7  63% 5 to 30 s Long Term Drift 5 Typ. < 0.25 %RH/yr Long Term Drift8 Typ. < 0.02 °C/yr
ΔRH (%RH)
± 10 maximum accuracy ± 8
ΔT ( C)
typical accuracy ± 2.0 ± 6 maximum accuracy ± 1.5 typical accuracy ± 4 ± 2 ± 1.0 ± 0 ± 0.5 0 10 20 30 40 50 60 70 80 90 100
Relative Humidity (%RH)
± 0.0
Figure 2
Typical and maximal tolerance at 25°C for relative -40 -20 0 20 40 60 80 100 120 humidity. For extensive information see Users Guide, Sect. 1.2.
Temperature (°C) Electrical Specification Figure 3
Typical and maximal tolerance for temperature sensor in °C. Parameter Condition min typ max Units Supply Voltage, VDD 2.1 3.0 3.6 V
Packaging Information
sleep mode 0.15 0.4 µA Supply Current, IDD 6 measuring 200 300 330 µA Sensor Type Packaging Quantity Order Number sleep mode 0.5 1.2 µW Tape & Reel 1500 1-100706-01 SHT20 Power Dissipation 6 measuring 0.6 0.9 1.0 mW Tape & Reel 5000 1-100704-01 average 8bit 3.2 µW Heater VDD = 3.0 V 5.5mW, T = + 0.5-1.5°C Communication digital 2-wire interface, I2C protocol Please Note: This datasheet is subject to change and may be amended without prior notice. 1 Default measurement resolution is 14bit (temperature) / 12bit (humidity). It can 5 Typical value for operation in normal RH/T operating range. Max. value is < be reduced to 12/8bit, 11/11bit or 13/10bit by command to user register. 0.5 %RH/y. Value may be higher in environments with vaporized solvents, out- 2 Accuracies are tested at Outgoing Quality Control at 25°C and 3.0 V. Values gassing tapes, adhesives, packaging materials, etc. For more details please exclude hysteresis and long term drift and are applicable to non-condensing refer to Handling Instructions. environments only. 6 Min and max values of Supply Current and Power Dissipation are based on 3 Time for achieving 63% of a step function, valid at 25°C and 1 m/s airflow. fixed VDD = 3.0 V and T<60°C. The average value is based on one 8bit 4 Normal operating range: 0-80 %RH, beyond this limit sensor may read a measurement per second. reversible of set with slow kinetics (+3 %RH after 60 h at humidity >80 %RH). 7 Response time depends on heat conductivity of sensor substrate. For more details please see Section 1.1 of the Users Guide. 8 Max. value is < 0.04°C/y. www.sensirion.com Version 5 – October 2022 2/14