Cold-Junction Compensated, 1-Wire Thermocouple-to-Digital Converters
Accurate 1-Wire thermocouple-to-digital converter ICs ease design effort and lower system cost
Communication with the master microcontroller is over a 1-Wire bus that by definition requires only one data line (and ground) for communication. Operating power can be obtained directly from the data line ("parasite power"), eliminating the need for an external power supply.
Each device has a unique 64-bit serial code, which allows multiple units to function on the same 1-Wire bus. Therefore, it is simple to use one microcontroller (the master device) to monitor temperature from many thermocouples distributed over a large area.
Four location address inputs simplify mapping of individual units to specific locations.
|MAX3185x Thermocouple to Digital Converter|
- Cold-junction compensation
- 14-bit, 0.25°C resolution
- Versions available for multiple thermocouples types: MAX31850 supports K-, J-, N-, T-, and E-types; MAX31851 supports S- and R-types (see table 1 in the full data sheet)
- 1-wire interface (read-only); power can be obtained from interface (parasite-powered mode)
- Detects thermocouple shorts to GND or VDD
- Detects open thermocouple
|Manufacturer Part Number||Description||Available Quantity||Datasheets|
|MAX31850EATB+||IC CONV THRMCPLE-DIG E TYPE TDFN||23|
|MAX31850EVKIT#||EVAL KIT FOR MAX31850||4|
|MAX31850JATB+||IC CONV THRMCPLE-DIG J TYPE TDFN||2164|
|MAX31850KATB+||IC CONV THRMCPLE-DIG K TYPE TDFN||136|
|MAX31850NATB+||IC CONV THRMCPLE-DIG N TYPE TDFN||20|
|MAX31850TATB+||IC CONV THRMCPLE-DIG T TYPE TDFN||2437|
|MAX31851RATB+||1-WIRE THRMOCPLE TO DIG CONV||25|
|MAX31851SATB+||1-WIRE THRMOCPLE TO DIG CONV||21|