MAX31850 - Maxim Integrated Products

MAX31850 1-Wire Thermocouple-to-Digital Converters

The MAX31850/MAX31851 cold-junction compensated, 1-WireM thermocouple-to-digital converters perform cold-junction compensation and digitize the signal from a K-, J-, N-, T-, S-, R-, or E-type thermocouple. The converters resolve temperatures to 0.25NC, allow readings as high as +1768NC and as low as -270NC, and exhibit thermocouple accuracy of 8 LSBs (2NC) f.

Features

S Integration Reduces Design Time and Lowers System Cost
• 14-Bit, 0.25NC Resolution
• Integrated Cold-Junction Compensation
• Available for Multiple Thermocouples Types: Supports K-, J-, N-, T-, and E-Type (MAX31850); S- and R-Type (MAX31851)
• Detects Thermocouple Shorts to GND or VDD
• Detects Open Thermocouple S 1-Wire Multiddrop Capability Simplifies Multisensor Systems
• 1-Wire Interface (Read-Only); Power Can Be Obtained from Interface (Parasite-Powered Mode) Applications Industrial Appliances HVAC Medical Ordering Information appears at end of data sheet. Block Diagram COLD.