ADIMAX31865
Overview
The MAX31865 is a precision resistance-to-digital converter designed specifically for Platinum Resistance Temperature Detectors (RTDs). It simplifies the design of high-accuracy temperature measurement systems by integrating a 15-bit sigma-delta ADC and comprehensive fault detection logic for identifying open, short, or out-of-range conditions.
Why Choose This Part
It eliminates the need for complex analog circuitry by providing a direct SPI interface for digital temperature data. The device features integrated protection against input overvoltage and provides built-in detection for RTD sensor failures and cable faults.
Applications
Key Specifications
Getting Started
To evaluate this IC, use the MAX31865EVKIT evaluation board which includes a USB interface and software for configuration. In custom designs, ensure the reference resistor (RREF) is a high-precision, low-drift component as it defines the measurement accuracy.
