MAXIM MAX6675 is an American company with a cold junction compensation, linearity correction, thermocouple break detection ADC Serial K-type thermocouple, its temperature resolution capability is 0. 25 Degree, cold junction compensation range -20~+80'C, wide operating voltage range 3. 0~5. 5V

Operating voltage: 3. 0~5. 5V
Internal integrated cold junction compensation circuit;
With a simple three serial SPI interface;
Temperature signal can be converted into 12-bit digital
Temperature resolution of: 0. 25 Degree;
Cold junction compensation range: -20~+80'C,
Embedded thermocouple break detection circuitry.
Using SPI 3 wire communication
K-type temperature probe
Type K temperature range 0-1024'C