MAX31855TASA+T

Sensor And Detector Interfaces Overview

The MAX31855TASA+T is a cold-junction compensated thermocouple-to-digital converter optimized for Type T thermocouples. It digitizes the signal using a 14-bit ADC with 0.25°C resolution, supporting readings from -270°C to +400°C. The device integrates internal temperature sensing and correction logic, outputting signed data via an SPI-compatible interface. Operating on a 3.0V to 3.6V supply, it consumes up to 1500µA and functions within a -40°C to +125°C ambient range. It detects open circuits and shorts to VCC or GND.

Sensor And Detector Interfaces Feature Summary

• Integrated cold-junction compensation and digital control logic
• Detects thermocouple faults including open circuits and shorts to power or ground
• Read-only SPI-compatible serial interface for microcontroller connectivity

Sensor And Detector Interfaces Applications

• Industrial process monitoring
• HVAC systems
• Appliance temperature control

Sensor And Detector Interfaces Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging and 'A' denotes the SOIC package variant. Confirm the 'SASA' designation aligns with Type T thermocouple compatibility requirements. Ensure RoHS compliance status matches project specifications before finalizing procurement orders.

Sensor And Detector Interfaces Selection Notes

Select this component when utilizing Type T thermocouples in environments requiring high precision over moderate temperature ranges. Verify that the system architecture supports a 3.3V logic level and SPI communication protocol. Consider thermal management strategies to minimize self-heating effects on measurement accuracy.

Sensor And Detector Interfaces Part Context

This part belongs to the MAX31855 family of thermocouple interfaces. Variants are distinguished by suffixes indicating the supported thermocouple type (e.g., K, J, N, T, S, R, E). The MAX31855TASA+T specifically targets Type T applications, sharing core architecture with other family members while differing in calibration parameters.

Sensor And Detector Interfaces Replacement Considerations

Direct substitutes include other MAX31855 variants such as MAX31855KASA+T or MAX31855JASA+T if the thermocouple type can be changed. Cross-family replacements require verifying interface compatibility and resolution requirements.