MAX6674Cold-Junction-Compensated K-Thermocouple-to-Digital Converter (0°C to +128°C)General DescriptionFeatures The MAX6674 cold-junction-compensation thermocou- ● Cold-Junction Compensation ple-to-digital converter performs cold-junction compensa- ● Simple SPI-Compatible Serial Interface tion and digitizes the signal from a type-K thermocouple. The data is output in a 10-bit resolution, SPI™-compatible, ● 10 Bit, 0.125°C read-only format. ● Open Thermocouple Detection This converter resolves temperatures to 0.125°C, allows readings as high as +128°C, and exhibits thermocouple accuracy of ±2°C for temperatures ranging from 0°C to +125°C. Ordering Information The MAX6674 is available in a small, 8-pin SO package. PARTTEMP RANGEPIN-PACKAGEApplications MAX6674ISA -20°C to +85°C 8 SO ● Industrial ● Appliances ● HVAC Pin Configuration TOP VIEW GND 1 8 N.C. T- 2 7 SO MAX6674 T+ 3 6 CS VCC 4 5 SCK SOTypical Application Circuit Vcc 0.1µF MICROCONTROLLER 68HC11A8 MAX6674 GND SO MISO T+ SCK SCK T- CS SSB 19-2241; Rev 2; 4/14