Breakout board for the MAX31865 RTD-to-Digital converter from Maxim. Two breakout hardware configurations are available standard, designed to interface with either the PT100 or PT1000 platinum RTDs. For non-standard applications, including thermistors, custom hardware configurations can be accommodated. Contact Technical Support for more information.

RTD devices may be wired in 2, 3 or 4-wire configurations using the 4-pin screw terminal input. The MAX31865 breakout is interfaced via 3 or 4-wire SPI with a data-ready output for specific operating modes. An LDO and a high-speed level shifter are included to allow interfacing with microcontroller devices between 3.0V and 5V (all Arduinos, Raspberry PI, etc) without sacrificing device performance.

Applications

• Instrumentation
• Data acquisition
• Oven controls
• High-accuracy temperature measurement applications where thermocouples aren't adequate

Features

• 2, 3 or 4-wire RTD interface capability
• Supply voltage range: 3.2 to 5.6V
• On-board LDO supplies 3V needed by MAX31865 IC
• All Arduino devices supported
• 15-bit SPI Interface
• High precision reference resistor used for consistent results
• Multiple fault modes detected and configurable
• Mounting holes for 4-40 sized screws
• Connections are spaced for 0.1" pin header
• RTD connections are screw terminals designed for PH0 sized Phillips screwdrivers
• Designed, manufactured, tested and shipped from the USA