MAX31865 high-precision isolated temperature acquisition module PT100/PT1000 (supports multi-channel) RTD

Parameters
Easy to use PT100/1000 temperature measurement module.
Using a 0.1%/25ppm 402R/4.02K reference resistor.
Wide power supply voltage: 2.7-9VDC, with a current of 30mA when powered by 3.3V and 19mA when powered by 5V.
The minimum isolation voltage is 2500VDC.
Standard SPI interface, supporting SPI interface reuse to achieve multi-channel temperature acquisition.
Supports PT100/PT1000 two-wire, three wire, and four wire modes, with a default 4-wire connection method.
Provide STM32 reference program (module information is located at the bottom of the page)
FAQ
Q: What is the difference between PT100 and PT1000?
Answer: The reference resistance of PT100 is 402R, and the reference resistance of PT1000 is 4.02K.
Question: What is the temperature measurement range
Answer: The measurement range is -200-550 degrees Celsius. (See MAX31865 specification page 21 for details)
Question: What is the accuracy?
Answer: When using an A-class sensor, the absolute accuracy is 0.5 degrees (without calibration), the maximum update rate is 0.093 degrees without digital filtering, and the peak to peak noise is 0.03 degrees.