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When both signals are the same, a common signal element due to the two inputs can be defined as the average of sum of the two signal

When two separate inputs are applied to the op- amp, the resulting difference signal is the difference between two inputs

Since any signal applied to an op- amp in general have both in-phase and out-of-phase components, the resulting output can be expressed as:

type of op amp operations

type of op amp operation

type of op amp operation

type of op amp operation

The higher the CMRR, the ___ and a high CMRR means that the amplifier is amplifying the desired signals and discriminating against the common-mode signa

contains a number of differential amplifier stages to achieve a very high voltage gain

It is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common to the two inputs