View max6674 datasheet:

19-2241; Rev 0; 11/01 Cold-Junction-Compensated K-Thermocouple- to-Digital Converter (0°C to +128°C) General Description Features Cold-Junction Compensation The MAX6674 cold-junction-compensation thermocou- ple-to-digital converter performs cold-junction compen- Simple SPI-Compatible Serial Interface sation and digitizes the signal from a type-K 10 Bit, 0.125°C thermocouple. The data is output in a 10-bit resolution, SPI™-compatible, read-only format. Open Thermocouple Detection This converter resolves temperatures to 0.125°C, allows readings as high as +128°C, and exhibits thermocou- ple 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. PART TEMP. RANGE PIN-PACKAGE MAX6674ISA