Common Mode and CMRR | ReadyDAQ

3 months ago, Sun, Sep 17, 2017, 22:27:48
The distinction between the "normal voltage" of the two differential inputs and the input ground is alluded to as the signal's Common Mode. Scientifically, the Common Mode voltage is characterized as Where Vhi is the voltage of the signal associated with the V+ (or VHi) terminal and Vlow is the voltage on the V-(or Vlow) terminal. The scope of input signals where the input can disregard or "reject" the Common Mode Voltage is known as the Common Mode Range.

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