STS4x Datasheet th 4 Generation, High-Accuracy, Ultra-Low-Power, 16-bit Temperature Sensor Platform Features 2 Temperature accuracy: up to 0.2 C Available with multiple I C addresses Supply voltage: 1.08 V 3.6 V Operating range: -40125 C Average current: 0.4 A (at meas. rate 1 Hz) NIST traceability Idle current: 80 nA JEDEC JESD47 qualification 2 I C fast mode plus, CRC checksum Mature technology from global market leader General Description The STS4x is a fully digital temperature sensor platform offering different accuracy classes, 2 2 currently available is the STS40. The I C interface provides multiple preconfigured I C addresses and enables an ultra-low power budget. Designed to cost, this four-pin dual-flat-no-leads package is suitable for surface mount technology (SMT) processing. Device Overview Functional Block Diagram Products Details 2 STS40-AD1B 0.2C T accur., 0x44 I C addr. 2 STS40-BD1B 0.2C T accur., 0x45 I C addr. 2 STS40-CD1B 0.2C T accur., 0x46 I C addr. Full product list on page 11. www.sensirion.com / D1 Version 1 February 2022 1/12 0.5 mm Contents Features ........................................................................................................................................................................ 1 General Description ................................................................................................................................................... 1 Device Overview ......................................................................................................................................................... 1 Functional Block Diagram ........................................................................................................................................ 1 1 Quick Start Hello World ..................................................................................................................................... 3 2 Sensor Specifications ............................................................................................................................................ 4 2.1 Sensor Performance ...................................................................................................................................... 4 3 Electrical Specifications ........................................................................................................................................ 5 3.1 Electrical Characteristics .............................................................................................................................. 5 3.2 Timings ............................................................................................................................................................... 6 3.3 Absolute Maximum Ratings ......................................................................................................................... 6 4 Sensor Operation .................................................................................................................................................... 6 2 4.1 I C Communication ......................................................................................................................................... 6 4.2 Data Type & Length ....................................................................................................................................... 7 4.3 Checksum Calculation ................................................................................................................................... 7 4.4 Command Overview ...................................................................................................................................... 8 4.5 Conversion of Signal Output ....................................................................................................................... 8 4.6 Serial Number .................................................................................................................................................. 8 4.7 Reset & Abort ................................................................................................................................................... 8 5 Physical Specification ............................................................................................................................................ 8 5.1 Package Description ...................................................................................................................................... 8 5.2 Package Outline .............................................................................................................................................. 9 5.3 Land Pattern ..................................................................................................................................................... 9 5.4 Pin Assignment & Laser Marking ............................................................................................................. 10 6 Quality and Material Contents........................................................................................................................... 10 7 Tape and Reel Packaging .................................................................................................................................. 10 8 Product Name Nomenclature ............................................................................................................................ 11 9 Ordering Information ............................................................................................................................................ 11 10 Revision History .................................................................................................................................................. 11 www.sensirion.com / D1 Version 1 February 2022 2/12