A practical differential amplifier provides: A)very high input impedance. B)very high differentialVoltage gain 1000. C)very small common mode gain

Question

A practical differential amplifier provides:
A)very high input impedance.
B)very high differentialVoltage gain > 1000.
C)very small common mode gain < 1.
D)all of these.

Quizplus · Accepted Answer

A practical differential amplifier should ideally have a very high input impedance, a very high differential voltage gain (>1000), and a very small common mode gain (<1) to effectively amplify the difference between two input signals while rejecting any common-mode noise or interference. Therefore, the best choice is D, which includes all three of these characteristics.

A Practical Differential Amplifier Provides