Differential Amplifier

What is the primary function of a differential amplifier?

• To convert signals to digital form

• To reduce noise in signals

• To amplify the difference between two signals

• To amplify the sum of two signals

In single-ended mode, how is the input signal applied?

• To both inputs simultaneously

• To one input while the other is grounded

• To the output only

• To the emitter of the transistors

What does CMRR stand for in the context of differential amplifiers?

• Common Mode Response Ratio

• Common Mode Rejection Ratio

• Common Mode Resistance Ratio

• Current Mode Rejection Ratio

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What is the formula for calculating the output voltage of a differential amplifier?

• V0 = AD * VD + AC * VC

• V0 = AD / AC

• V0 = VD - VC

• V0 = AD + AC

What happens to the output signal in common mode operation?

• It doubles

• It becomes zero

• It increases significantly

• It becomes negative