Practice Example Circuit Analysis (79.3) - Differential Amplifier : Analysis and Numerical Examples (Contd.)

Practice: Example Circuit Analysis

Lesson 79.3Differential Amplifier : Analysis and Numerical Examples (Contd.)

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8 questions

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6 sample questions

Question 1.
Define a differential amplifier in your own words.
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Focus on what makes it different from other amplifiers.
Question 2.
What role does the operating point play in a transistor's function?
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Think about how voltage levels affect transistor behavior.
3Question 3.
What is the main function of a differential amplifier?
- To amplify the sum of the inputs
- To amplify the difference between the inputs
- To provide voltage regulation
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Think about the specific signals it emphasizes.
4Question 4.
True or False: High common mode gain is desired in differential amplifiers.
- True
- False
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Consider how noise affects signal integrity.
Question 5.
Design a differential amplifier circuit using both BJTs and MOSFETs achieving a differential mode gain of 150. Calculate the required resistor values assuming desired currents.
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Use the formula A_d = R_C / R_E.
Question 6.
Discuss how the common mode rejection ratio (CMRR) can be calculated and its significance in real-world applications.
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Look at definitions of both types of gain.

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