Practice Common Mode Gain Calculation (89.2.4) - Numerical examples on current mirror and its applications (Part-D)

Practice: Common Mode Gain Calculation

Lesson 89.2.4Numerical examples on current mirror and its applications (Part-D)

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8 questions

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6 sample questions

Question 1.
Define common mode gain in the context of differential amplifiers.
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Think about what happens to signals that are identical at both inputs.
Question 2.
What is the role of a current mirror in a differential amplifier?
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Consider the function of copying currents in the circuit.
3Question 3.
What is the common mode gain of a differential amplifier designed for high performance?
- High
- Low
- Equal to differential gain
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Reflect on the purpose of differential amplifiers.
4Question 4.
True or False: The current mirror helps to equalize the quiescent currents in a differential amplifier.
- True
- False
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Remember the role of current mirrors in circuit performance.
Question 5.
Design a differential amplifier with a current mirror that maintains a differential mode gain of 300 while ensuring the common mode gain remains below 0.1. Calculate the needed parameters.
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Consider how varying the values affects both gains.
Question 6.
Given a common mode voltage applied to a differential amplifier, analyze how the current mirror's performance gets affected and quantify any changes in output voltage.
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Focus on the characteristics of output voltage variation with common inputs.

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