SHT40I-HD1B-R2

SHT4xI-Analog 4th Generation, High-Accuracy, 5V Relative Humidity and Temperature Analog Sensor Platform Features • Relative humidity accuracy ±2.5 %RH • NIST traceable • Temperature accuracy ±0.3 °C • Operating range: 0…100 %RH, -40…125 °C • Supply voltage: 4.5…5.5 V • Fully functional in condensing environment • Average current: 520 µA • Variable power heater • Analog voltage output 10-90%VDD • Mature technology from global market leader • Multiple out output characteristics available • Protection options available General Description Sensors from the SHT4xI-Analog sensor family, currently represented by the SHT40I-Analog, deliver an analog voltage output with several available output characteristics. An optional periodic variable power heater allows for operation in highly demanding environments, such as constant high humidity and condensing atmospheres. The four-pin dual-flat-no-leads package is suitable for surface mount technology (SMT) processing. Device Overview Functional Block Diagram Products Details base RH&T accur., standard ratiometric SHT40I-HD1B output characteristic, available in distribution. SHT40I-ID1B SHT40I-JD1B base RH&T accur., application specific output characteristics, only available at SHT40I-KD1B Sensirion. SHT40I-LD1B x: Placeholder for a family of products SHT40I-xD1B with base RH&T accur. and customer specific output characteristic Full product list on page 18 www.sensirion.com Version 2 – November 2022 1/20 Contents Features ........................................................................................................................................................................ 1 General Description ................................................................................................................................................... 1 Device Overview ......................................................................................................................................................... 1 Functional Block Diagram ........................................................................................................................................ 1 1 Humidity and Temperature Sensor Specifications ....................................................................................... 3 1.1 Relative Humidity ............................................................................................................................................3 1.2 Temperature .....................................................................................................................................................4 1.3 Recommended Operating Conditions ......................................................................................................4 2 Electrical Specifications ........................................................................................................................................ 5 2.1 Electrical Characteristics ..............................................................................................................................5 2.2 Timings ...............................................................................................................................................................5 2.3 Absolute Maximum Ratings .........................................................................................................................6 3 Sensor Operation .................................................................................................................................................... 6 3.1 Startup ................................................................................................................................................................6 3.2 Conversion of the Signal Output ................................................................................................................6 3.3 Standard Output Characteristic Option: SHT40I-HD1B......................................................................7 3.4 Output Characteristic Option 2: SHT40I-ID1B .......................................................................................8 3.5 Output Characteristic Option 3: SHT40I-JD1B ......................................................................................9 3.6 Output Characteristic Option 4: SHT40I-KD1B ...................................................................................10 3.7 Output Characteristic Option 4: SHT40I-LD1B....................................................................................11 3.8 Heater Operation for Anti-Creep Functionality in Highly Demanding Environments ...............13 4 Physical Specification .......................................................................................................................................... 14 4.1 Package Description ....................................................................................................................................14 4.2 Package Outline ............................................................................................................................................14 4.3 Land Pattern ...................................................................................................................................................15 4.4 Pin Assignment & Laser Marking.............................................................................................................15 4.5 Thermal Information .....................................................................................................................................16 5 Quality and Material Contents........................................................................................................................... 16 6 Tape and Reel Packaging .................................................................................................................................. 17 7 Product Nomenclature......................................................................................................................................... 18 8 Ordering Information ............................................................................................................................................ 19 9 Bibliography ............................................................................................................................................................ 19 10 Revision History .................................................................................................................................................. 19 www.sensirion.com Version 2 – November 2022 2/20 1 Humidity and Temperature Sensor Specifications Every SHT40I-Analog is individually tested, calibrated, and identifiable. For the calibration, Sensirion uses transfer standards, which are subject to a scheduled calibration procedure. The calibration of the reference, used for the calibration of the transfer standards, is NIST traceable through an ISO/IEC 17025 accredited laboratory. 1.1 Relative Humidity Parameter Conditions typ. SHT40I RH accuracy1 max. typ. At 25°C Repeatability2 Resolution3 Hysteresis range4 extended5 Specified Response time6 Long-term drift7 Sensitivity (RH range: 0…100%) t63% typ. VDD=5.0 V Value 2.5 see Figure 1 0.5 0.01 0.8 0 to 100 4