Analog-To-Digital Converters Part 2 Of 6: Do I Need All My Bits? by Bonnie C. Baker and Russell Anderson, Texas Instruments
Temperature is the most widely measured phenomenon in the process control environment. Circuit designers use common sensing elements such as resistance temperature detectors (RTDs), thermistors, thermocouples, or diodes to sense absolute temperatures. Of these technologies, the platinum RTD (PRTD) temperature sensing resistive element is the most accurate and stable over time and temperature. Although the RTD temperature sensor may be an accurate choice for your application needs, the element's sensitivity and low resistance presents challenges when bringing the sensor's signal conditioning chain to the controller.
