In the first two parts of my ADC accuracy series, I established the differences between resolution and accuracy for an analog-to-digital converter (ADC) and explained the factors that contribute to total unadjusted error (TUE) of the ADC. Most of these errors are static errors that can be calibrated under ambient conditions. System performance can continue to drift even after calibration, however, due to a change in temperature, which is common in many factory automation and control and other applications. Other factors such as aging of electronic components, humidity and pressure can also play a role in long-term performance drift.(read more)![]()
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