The input stage of an Op-amp is usually a ________________?
Correct answer: A. differential amplifier
- A. differential amplifier
- B. class B push-pull amplifier
- C. CE amplifier
- D. swamped amplifier
Explanation
The differential input stage allows an op-amp to amplify the voltage difference between its two inputs while rejecting common-mode signals. Push-pull stages are generally used later as output stages.
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