The differential voltage gain of a differential amplifier is equal to RC divided by _______________?
Correct answer: C. 2r'e
- A. r'e
- B. r'e/2
- C. 2r'e
- D. RE
Explanation
For a BJT differential amplifier with a single-ended output, the differential gain magnitude is approximately A_d = R_C/(2r′_e). A double-ended output would use a different factor, but the standard single-ended convention gives option c.
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