Allen, Phillip E. School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia.
Last reviewed:January 2020
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An electronic circuit that is designed to amplify the difference between two voltages measured with respect to a common reference, usually designated as ground. By convention, the net difference of two voltages measured with respect to a common reference is called the differential-mode voltage, while the sum of the voltages, usually divided by two to give an average value, is called the common-mode voltage.
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