MAX31865 RTD Platinum Resistance Temperature Detector (RTD) to Digital Converter Module

The MAX31865 RTD Platinum Resistance Temperature Detector (RTD) to Digital Converter Module is a high-accuracy RTD interface module designed for PT100 and PT1000 platinum resistance temperature sensors. Based on the MAX31865 precision converter IC, it accurately converts RTD resistance into digital temperature data through an SPI communication interface. Featuring built-in fault detection and support for both 2-wire, 3-wire, and 4-wire RTD configurations, it is ideal for industrial automation, laboratory equipment, process control, and embedded temperature monitoring applications.

Key Features

• Based on the MAX31865 precision RTD-to-digital converter IC
• Compatible with PT100 and PT1000 RTD sensors
• Supports 2-wire, 3-wire, and 4-wire RTD configurations
• SPI digital communication interface
• High-accuracy temperature measurement
• Integrated fault detection and diagnostics
• Low-noise 15-bit ADC with programmable filtering
• Suitable for industrial and embedded temperature monitoring

Technical Specifications

Applications

• Industrial temperature monitoring
• Process control systems
• Laboratory instrumentation
• HVAC and environmental monitoring
• Embedded and IoT temperature sensing
• Scientific and research applications

Important Notes

• Select the correct module variant for PT100 or PT1000 RTD sensors.
• Configure the module for 2-wire, 3-wire, or 4-wire RTD operation as required.
• Operate the module with a 3.3V supply unless the module includes onboard level shifting and regulation.
• Use shielded cables for long RTD connections to minimize electrical noise.
• Calibrate the system if high-precision temperature measurements are required.