MAX31865 RTD Platinum Resistance Temperature Detector Module PT100-PT1000
For precision temperature sensing, the MAX31865 RTD module is the ultimate choice.
- Integration: Lowers System Cost, Simplifies Design Efforts, and Reduces Design Cycle Time
- Conversion: Simple Conversion of Platinum RTD Resistance to Digital Value
- Compatibility: Handles 100 to 1k (at 0C) Platinum RTDs (PT100 to PT1000)
- Interface: SPI-Compatible Interface
- Accuracy: High Accuracy Facilitates Meeting Error Budgets
- Resolution: 15-Bit ADC Resolution; Nominal Temperature Resolution 0.03125NC
- Input Protection: 45V Input Protection
- Fault Detection: Integrated Fault Detection Increases System Reliability
Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor. In this sensor, the resistor is actually a small strip of Platinum with a resistance of 100 ohms at 0 C, thus the name PT100. Compared to most NTC/PTC thermistors, the PT type of RTD is much more stable and precise (but also more expensive). PT100s have been used for many years to measure temperature in laboratory and industrial processes, and have developed a reputation for accuracy (better than thermocouples), repeatability, and stability.
The MAX31865 is an easy-to-use thermistor-to-digital output converter optimized for platinum resistance temperature detectors (RTDs). The external resistor sets the RTD sensitivity, and the high precision ADC converts the ratio of the RTD resistor to the reference resistor into a digital output. The MAX31865 has overvoltage protection up to 45V and provides configurable RTD and cable open and short-circuit condition detection.
- Specs:
- Package Includes: 1 x MAX31865 RTD Platinum Resistance Temperature Detector Module PT100-PT1000
*Images are for illustration only; actual product may vary.