MAX31851SATB+

Sensor And Detector Interfaces Overview

The MAX31851SATB+T is a cold-junction compensated, 1-Wire thermocouple-to-digital converter designed for S- and R-type thermocouples. It digitizes signals with a 14-bit resolution of 0.25°C, supporting readings from -270°C to +1768°C. The device operates on a supply voltage range of 3.0V to 3.7V and functions within an operating temperature range of -40°C to +125°C. Communication occurs via a read-only 1-Wire interface, allowing parasite power operation directly from the data line. Each unit features a unique 64-bit serial code and four location address inputs (AD0–AD3) to facilitate multi-drop bus configurations.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation eliminates external reference components
• Read-only 1-Wire interface supports parasite power mode for simplified wiring
• Detects thermocouple shorts to VDD or GND and open circuit conditions
• Unique 64-bit ROM code enables addressing multiple sensors on a single bus

Sensor And Detector Interfaces Applications

• Industrial process control systems
• HVAC monitoring equipment
• Medical diagnostic devices

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'SATB+T' against official manufacturer documentation to confirm tape-and-reel packaging and RoHS compliance status. Ensure the ordering part number matches the exact thermocouple type requirements for your design. Cross-reference the manufacturer's current datasheet revision to validate all electrical specifications before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component when utilizing S-type or R-type thermocouples requiring high-temperature measurement capabilities up to 1768°C. The 1-Wire interface is suitable for applications minimizing pin counts and wiring complexity. Consider the 0.25°C resolution and ±2°C accuracy limits for K/J/N/T/E types if using alternative variants in the MAX31850/MAX31851 family.

Sensor And Detector Interfaces Part Context

This device belongs to the MAX31850/MAX31851 family of cold-junction compensated converters. While the MAX31850 supports K, J, N, T, and E types, the MAX31851 variant is specifically optimized for S and R platinum/rhodium thermocouples. Both share identical interfaces and fault detection logic but differ in internal calibration tables for their respective thermocouple sensitivities.

Sensor And Detector Interfaces Replacement Considerations

MAX31850KATB+T: Supports K-type only; different calibration. MAX31850JATB+T: Supports J-type only. MAX31850NATB+T: Supports N-type only. MAX31850TATB+T: Supports T-type only. MAX31850EATB+T: Supports E-type only. Note that these are functionally similar but calibrated for different thermocouple types.