Datasheet STSC1 High Accuracy Digital Temperature Sensor IC Accurate: 0.3C typ. accuracy 3 Small: DFN package, 2 2 0.7 mm 2 Easy-to-use: fully calibrated, linearized I C output Low-power: 8.6 W average power consumption Fast: Power-up and measurement within 1 ms Product Summary 3 The STSC1 is a digital temperature sensor designed The ultra-small, 2 2 0.7 mm DFN package enables applications in even the most limited of spaces. The sensor especially for applications requiring a highly accurate temperature measurement. Sensirions CMOSens covers a temperature measurement range of 40 to 125 C. The typical accuracy of the temperature sensor is technology offers a complete sensor system on a single 0.3C. The operation voltage of 1.8 V and an average chip, consisting of a bandgap temperature sensor, analog and digital signal processing, A/D converter, calibration power consumption below 8.6W make the STSC1 suitable for mobile or wireless applications running on the data memory, and a digital communication interface 2 tightest power budgets. supporting I C fast mode. Block Diagram Benefits of Sensirions CMOSens Technology High reliability and long-term stability Sensor system on a single chip T sensor Designed for mass production Optimized for lowest cost Signal conditioning Low signal noise analog ADC digital Contents of this Data Sheet Data processing and system control 1 Temperature Sensor Specifications .................................. 2 2 Calibration mem. I C interface 2 Electrical Specifications .................................................... 3 4 Timing Specifications ........................................................ 4 5 Interface Specifications ..................................................... 5 VDD VSS SDA SCL 6 Operation and Communication ......................................... 5 7 Quality ............................................................................... 8 Figure 1 Functional block diagram of the STSC1. 8 Packaging and Traceability ............................................... 8 9 Ordering Information ......................................................... 8 10 Technical Drawings ........................................................... 9 11 Further Information.......................................................... 11 www.sensirion.com Version 2 September 2015 1/4 1 Temperature Sensor Specifications Parameter Conditions Value Units Typ. 0.3 C 1 Accuracy tolerance Max. see Figure 2 C 2 Repeatability - 0.1 C 3 Resolution - 0.01 C 4 Specified range - 40 to +125 C 5 Response time <5 to 30 s 63% 6 Long-term drift Typ. < 0.02 C/y Table 1 Temperature sensor specifications. T C 2 Maximum accuracy Typical accuracy 1.5 1 0.5 0 -40 -20 0 20 40 60 80 100 120 Temperature C Figure 2 Typical and maximal accuracy for temperature sensor in C. 1 For definition of typ. and max. 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 measurement values at constant conditions and is a measure for the noise on the physical sensor output. 3 Resolution of A/D converter. 4 Specified range refers to the range for which the temperature sensor specification is guaranteed. 5 Temperature response time depends on heat conductivity of sensor substrate and design-in of sensor in application. 6 Max. value is < 0.04C/y. www.sensirion.com Version 2 September 2015 2/13