MAX31865ATP+T

Thermal Management Overview

The MAX31865ATP+T is a platinum RTD-to-digital converter optimized for PT100 to PT1000 sensors. It features a 15-bit delta-sigma ADC with a maximum total accuracy of ±0.5°C across the -40°C to +125°C operating range. The device operates on a 3.0V to 3.6V supply and includes an SPI-compatible interface with a maximum clock frequency of 5MHz. Input protection supports up to ±45V, and it accommodates 2-, 3-, and 4-wire sensor connections.

Thermal Management Feature Summary

• Integrates a precision delta-sigma ADC to convert resistance ratios into digital values
• Provides programmable detection for open and short circuit conditions in RTDs and cables
• Includes input protection against overvoltage faults up to ±45V
• Supports 2-wire, 3-wire, and 4-wire sensor connection configurations

Thermal Management Applications

• Industrial equipment
• Medical equipment
• Instrumentation

Thermal Management Procurement Notes

Verify that the ordering suffix 'T' corresponds to tape-and-reel packaging as specified in official documentation. Confirm the specific package variant matches the required footprint, as the MAX31865 family includes both TQFN and SSOP options. Ensure compatibility with the host system's voltage levels and SPI timing requirements before finalizing procurement.

Thermal Management Selection Notes

Select this component when high-accuracy temperature measurement using platinum RTDs is required. It is suitable for applications needing integrated signal conditioning and fault detection to simplify design efforts. Consider the 15-bit resolution and ±0.5°C accuracy for meeting strict error budgets in industrial or medical environments.

Thermal Management Part Context

Manufactured by Analog Devices Inc./Maxim Integrated, the MAX31865 is part of a series of specialized RTD-to-digital converters. It simplifies the interface between resistive temperature detectors and microcontrollers by handling analog signal conditioning, excitation, and digitization within a single integrated circuit.

Thermal Management Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.