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Op-Amp Gain and Practical Considerations
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You are designing an audio amplifier circuit using an operational amplifier. You want to ensure that the output signal remains stable and does not distort at high input levels. Given that op-amps have high but finite gain, which design consideration is most critical for maintaining output stability in your circuit?

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A

Use negative feedback to control gain and improve linearity.

B

Select an op-amp with the highest possible gain available.

C

Avoid using any feedback to maintain the original signal.

D

Increase the input voltage beyond the power supply limits.

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Negative feedback tells the op‑amp how much to amplify, keeping the gain steady. Other options are incorrect because Choosing the highest‑gain op‑amp sounds great, but the gain becomes uncontrollable if the signal grows; Leaving out feedback might seem to preserve the original signal shape, yet the amplifier reacts unpredictably.

Key Concepts

Op-Amp Gain
Negative Feedback
Signal Stability
Topic

Op-Amp Gain and Practical Considerations

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hard level question

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Definition
Definition

While op-amps do not have infinite gain in practice, their high gain allows for reliable circuit design using negative feedback. Op-amp gain specifications vary between models, and practical op-amp circuits rely on predictable gain behavior.

Topic Definition

While op-amps do not have infinite gain in practice, their high gain allows for reliable circuit design using negative feedback. Op-amp gain specifications vary between models, and practical op-amp circuits rely on predictable gain behavior.

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