Discussion
Assertion (A): Assertion: Integrated amplifier stages reach far higher gains than discrete ones.
Reason (R): Reason: Their collector loads are current sources of very high impedance.
Select the correct answer from the options below.
Answer: C
Both are true and the second is the reason: with the load impedance no longer dominant, the gain rises to the device's intrinsic limit of transconductance times output resistance, a few thousand rather than a few hundred. Discrete designs cannot easily afford the extra devices or the matching. What is cheap in one technology and expensive in another is what makes the two design styles diverge as much as they do. Most errors on this topic come from carrying a result across from a neighbouring scheme where it does not hold.
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