MAX31856MUD+

Sensor And Detector Interfaces Overview

The MAX31856MUD+ is a precision thermocouple-to-digital converter featuring internal cold-junction compensation and linearization. It supports K, J, N, R, S, T, E, and B thermocouple types with a 19-bit resolution of 0.0078125°C. The device operates on a single 3.3V supply (3.0V to 3.6V) with an active current of 1.2mA. It provides ±45V overvoltage protection on the inputs and includes 50Hz/60Hz noise rejection filtering. The component utilizes a standard SPI interface and is housed in a 14-pin TSSOP package.

Sensor And Detector Interfaces Feature Summary

• Provides high-accuracy temperature readings through automatic linearization correction for eight specific thermocouple types.
• Integrates internal cold-junction compensation to minimize external system components while maintaining measurement accuracy.
• Includes robust fault management capabilities such as open-circuit detection and over/undertemperature threshold monitoring.
• Features integrated input protection against overvoltage conditions up to ±45V to ensure reliable operation.

Sensor And Detector Interfaces Applications

• Temperature Controllers
• Industrial Ovens, Furnaces, and Environmental Chambers
• Industrial Equipment

Sensor And Detector Interfaces Procurement Notes

Verify the exact ordering suffix to confirm the packaging format. The MUD variant typically indicates tube packaging, whereas the MUT suffix denotes tape-and-reel quantities. Confirm RoHS compliance status and lead-free specifications directly with the manufacturer or authorized distributors before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component when precise thermocouple digitization is required without external microcontroller processing overhead. Ensure the application environment remains within the -55°C to +125°C operating range. Verify that the SPI interface timing requirements align with the host controller's capabilities and that the 3.3V logic levels are compatible.

Sensor And Detector Interfaces Part Context

This part belongs to the Maxim Integrated MAX31856 family of precision thermocouple interfaces. It serves as a direct upgrade to earlier models like the MAX31855 by offering support for additional thermocouple types including N, R, S, and B. The device integrates advanced digital filtering and comprehensive fault detection features not present in legacy counterparts.

Sensor And Detector Interfaces Replacement Considerations

The MAX31855NASA+ is a documented substitute within the same product family. Verify pin compatibility and software register mapping differences before implementation. Other variants may exist but require specific datasheet cross-referencing to ensure functional equivalence.