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common mode voltage (CMV)

The common mode voltage (CMV) is characterized by the fact that the signals on two signal-carrying lines are in phase and their voltage level and polarity are identical.

In various circuits and modules such as operational amplifiers, the common mode voltage represents an important characteristic value from which the modulation range, the Common Mode Voltage Range( CMVR), for linear amplification behavior is derived. It is the average value of the input voltages at an operational or differential amplifier. The common mode voltage is the sum of the voltages applied to the two inputs divided by 2, thus: (U1 + U2)/2.

If there are voltages in phase opposition on the signal-carrying conductors, this is referred to as normal mode voltage( NMV).

Informations:
Englisch: common mode voltage - CMV
Updated at: 11.04.2019
#Words: 117
Links: mode, voltage, fact, signal, phase
Translations: DE
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