MAX31855SASA+T

Sensor And Detector Interfaces Overview

The MAX31855SASA+T is a cold-junction compensated thermocouple-to-digital converter optimized for S-type thermocouples. It digitizes signals into a signed 14-bit format with 0.25°C resolution, supporting readings from -270°C to +1800°C. The device operates on a 3.0V to 3.6V supply and draws up to 1500µA. It features an SPI-compatible read-only interface with a maximum clock frequency of 5MHz. The component provides internal cold-junction compensation with ±3°C accuracy over the full temperature range and detects faults such as open circuits or shorts to VCC/GND.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation eliminates external sensor requirements
• Detects thermocouple faults including open circuits and shorts to power rails
• Provides simple read-only serial interface compatible with standard microcontrollers

Sensor And Detector Interfaces Applications

• Industrial process control systems
• HVAC equipment monitoring
• Appliance temperature sensing

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'S' indicates S-type thermocouple compatibility during procurement. Confirm the '+T' designation corresponds to tape-and-reel packaging. Ensure the ordering part number matches the required package type and RoHS compliance status before finalizing purchase orders.

Sensor And Detector Interfaces Selection Notes

Select this variant specifically for S-type thermocouple applications requiring high-temperature measurement capabilities. Verify that the system voltage remains within the 3.0V to 3.6V operating range. Consider the thermal resistance characteristics if precise cold-junction accuracy is critical in high-power environments.

Sensor And Detector Interfaces Part Context

This component belongs to the MAX31855 family of thermocouple-to-digital converters manufactured by Analog Devices Inc./Maxim Integrated. The family includes variants for K, J, N, T, E, R, and S types. The SASA+T suffix denotes the S-type version in an 8-SOIC package supplied in tape-and-reel format.

Sensor And Detector Interfaces Replacement Considerations

Direct functional substitutes include other MAX31855 variants (e.g., MAX31855KASA+T) only if the thermocouple type difference is acceptable. No other direct pin-compatible replacements are documented in official sources.