MAX31851RATB+T

Sensor And Detector Interfaces Overview

The MAX31851RATB+T is a cold-junction compensated, 1-Wire thermocouple-to-digital converter designed for R-type thermocouples. It features a 14-bit resolution of 0.25°C and supports temperature readings from -50°C to +1768°C. The device operates on a supply voltage range of 3.0V to 3.7V with an active current consumption of up to 1750µA at 3.7V. It includes integrated fault detection for open circuits and shorts to VDD or GND. The component utilizes a TDFN-EP (3mm x 4mm) package and functions within an operating temperature range of -40°C to +125°C.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation and 14-bit analog-to-digital conversion for R-type thermocouples
• Single-wire 1-Wire interface supporting parasite power mode for simplified wiring
• Built-in fault detection capabilities identifying open thermocouples and shorts to supply or ground

Sensor And Detector Interfaces Applications

• Industrial process monitoring systems requiring high-temperature measurement
• HVAC equipment utilizing R-type thermocouple sensors
• Medical devices necessitating precise thermal regulation

Sensor And Detector Interfaces Procurement Notes

Verify the specific 'R' suffix indicates R-type thermocouple compatibility rather than other variants. Confirm the 'TB' designation corresponds to the TDFN-EP package type. Ensure the '+T' suffix aligns with the required tape-and-reel packaging format for automated assembly processes.

Sensor And Detector Interfaces Selection Notes

Select this component when R-type thermocouple support is mandatory due to its high-temperature capability. Consider the 1-Wire interface requirements and the need for parasite power if external supply lines are restricted. Evaluate the TDFN-EP footprint constraints against available board space.

Sensor And Detector Interfaces Part Context

This part belongs to the MAX3185x family of thermocouple converters. While the MAX31850 covers K, J, N, T, and E types, the MAX31851 variant specifically addresses S and R types. The RATB+T designation specifies the R-type sensitivity, TDFN package, and reel packaging configuration.

Sensor And Detector Interfaces Replacement Considerations

MAX31851SATB+T serves as a direct substitute for S-type applications within the same package and interface specifications.