MAX6675

EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX6675 Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0°C to +1024°C) General Description The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple. The data is output in a 12-bit resolution, SPI-compatible, read-only format. This converter resolves temperatures to 0.25°C, allows readings as high as +1024°C, and exhibits thermocouple accuracy of 8 LSBs for temperatures ranging from 0°C to +700°C. The MAX6675 is available in a small, 8-pin SO package. Applications ● Industrial ● Appliances ● HVAC Features ● Direct Digital Conversion of Type -K Thermocouple Output ● Cold-Junction Compensation ● Simple SPI-Compatible Serial Interface ● 12-Bit, 0.25°C Resolution ● Open Thermocouple Detection Ordering Information PART MAX6675ISA TEMP RANGE -20°C to +85°C PIN-PACKAGE 8 SO Pin Configuration TOP VIEW GND 1 T- 2 T+ 3 VCC 4 MAX6675 8 N.C. 7 SO 6 CS 5 SCK SO Typical Application Circuit Vcc 0.1µF MAX6675 GND SO T+ SCK T- CS MICROCONTROLLER 68HC11A8 MISO SCK SSB 19-2235; Rev 3; 6/21 MAX6675 Cold-Junction-Compensated K-Thermocoupleto-Digital Converter (0°C to +1024°C) Absolute Maximum Ratings Supply Voltage (VCC to GND) ................................ -0.3V to +6V SO, SCK, CS, T-, T+ to GND ......................-0.3V to VCC + 0.3V SO Current .......................................................................