Practice Results (10) - DIFFERENTIAL AMPLIFIER AND BASIC OP-AMP GAIN STAGES
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Practice Questions

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Question 1 Easy

Define differential gain.

💡 Hint: Think about how much the amplifier amplifies the difference in input signals.

Question 2 Easy

What does a high CMRR indicate?

💡 Hint: What happens when signals are the same at both inputs?

4 more questions available

Interactive Quizzes

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Question 1

What is the role of differential gain in amplifiers?

A) To measure the frequency response
B) To amplify the difference between two input signals
C) To add two input signals
D) To reduce noise

💡 Hint: Focus on what the term 'differential' refers to in this context.

Question 2

True or False: A common-mode gain greater than zero is ideal in differential amplifiers.

True
False

💡 Hint: Consider how common-mode signals affect your signals.

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Challenge Problems

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Challenge 1 Hard

Design a circuit with an Op-Amp that aims for a gain of 15. What values of resistors would you choose for the non-inverting configuration?

💡 Hint: Use the feedback formula for non-inverting amplifiers.

Challenge 2 Hard

Propose why matching transistors in a differential amplifier is crucial for achieving high CMRR. Discuss potential designs that help achieve this.

💡 Hint: Reference characteristics like hFE (beta) for effective matching.

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