Datasheet SHT3x-DIS Humidity and Temperature Sensor Fully calibrated, linearized, and temperature compensated digital output Wide supply voltage range, from 2.15 V to 5.5 V I2C Interface with communication speeds up to 1 MHz and two user selectable addresses Typical accuracy of 1.5 %RH and 0.1 C for SHT35 Very fast start-up and measurement time Tiny 8-Pin DFN package Product Summary 2 SHT3x-DIS is the next generation of Sensirions package has a footprint of 2.5 x 2.5 mm while keeping temperature and humidity sensors. It builds on a new a height of 0.9 mm. This allows for integration of the CMOSens sensor chip that is at the heart of Sensirions SHT3x-DIS into a great variety of applications. new humidity and temperature platform. The SHT3x-DIS Additionally, the wide supply voltage range of 2.15 V to has increased intelligence, reliability and improved 5.5 V guarantees compatibility with diverse assembly accuracy specifications compared to its predecessor. Its situations. All in all, the SHT3x-DIS incorporates 15 functionality includes enhanced signal processing, two years of knowledge of Sensirion, the leader in the distinctive and user selectable I2C addresses and humidity sensor industry. communication speeds of up to 1 MHz. The DFN Benefits of Sensirions CMOSens Technology nRESET High reliability and long-term stability T Sensor RH Sensor VDDVDD Industry-proven technology with a track record of more than 15 years VSSVSS Power on ADCADC Designed for mass production Reset High process capability Calibration Memory High signal-to-noise ratio Content Data processing RESET 1 Sensor Performance............................................. 2 & Linearization 2 Specifications ....................................................... 6 Digital Interface Alert Logic 3 Pin Assignment .................................................... 8 4 Operation and Communication ............................. 9 ADDR SDA SCL Alert 5 Packaging ........................................................... 16 6 Shipping Package .............................................. 18 Figure 1 Functional block diagram of the SHT3x-DIS. The sensor signals for humidity and temperature are factory 7 Quality ................................................................ 19 calibrated, linearized and compensated for temperature and supply voltage dependencies. 8 Ordering Information........................................... 19 9 Further Information ............................................. 19 www.sensirion.com February 2019 - Version 6 1/22 Datasheet SHT3x-DIS 1 Sensor Performance Humidity Sensor Specification Parameter Condition Value Units Typ. 2 %RH 1 SHT30 Accuracy tolerance Max. Figure 2 - Typ. 2 %RH 1 SHT31 Accuracy tolerance Max. Figure 3 - Typ. 1.5 %RH 1 SHT35 Accuracy tolerance Max. Figure 4 - Low, typ. 0.21 %RH 2 Repeatability Medium, typ. 0.15 %RH High, typ. 0.08 %RH Resolution Typ. 0.01 %RH Hysteresis at 25C %RH 0.8 3 4 Specified range extended 0 to 100 %RH 5 6 Response time 8 s 63% 7 Long-term drift Typ. <0.25 %RH/yr Table 1 Humidity sensor specification. Temperature Sensor Specification Parameter Condition Value Units 1 typ., 0C to 65C C 0.2 SHT30 Accuracy tolerance Max. Figure 8 - 1 typ., 0C to 90C 0.2 C SHT31 Accuracy tolerance Max. Figure 9 - 1 typ., 20C to 60C 0.1 C SHT35 Accuracy tolerance Max. Figure 10 - Low, typ. 0.15 C 2 Repeatability Medium, typ. 0.08 C High, typ. 0.04 C Resolution Typ. 0.01 C Specified Range - -40 to 125 C 8 Response time >2 s 63% Long Term Drift max <0.03 C/yr Table 2 Temperature sensor specification. 1 For definition of typical and maximum accuracy tolerance, please refer to the document Sensirion Humidity Sensor Specification Statement. 2 The stated repeatability is 3 times the standard deviation (3) of multiple consecutive measurements at the stated repeatability and at constant ambient conditions. It is a measure for the noise on the physical sensor output. Different measurement modes allow for high/medium/low repeatability. 3 Specified range refers to the range for which the humidity or temperature sensor specification is guaranteed. 4 For details about recommended humidity and temperature operating range, please refer to section 1.1. 5 Time for achieving 63% of a humidity step function, valid at 25C and 1m/s airflow. Humidity response time in the application depends on the design-in of the sensor. 6 With activated ART function (see section 4.7) the response time can be improved by a factor of 2. 7 Typical value for operation in normal RH/T operating range, see section 1.1. Maximum value is < 0.5 %RH/yr. Higher drift values might occur due to contaminant environments with vaporized solvents, out-gassing tapes, adhesives, packaging materials, etc. For more details please refer to Handling Instructions. 8 Temperature response times strongly depend on the type of heat exchange, the available sensor surface and the design environment of the sensor in the final application. www.sensirion.com February 2019- Version 6 2/22