Practice Dc And Small Signal Analysis (87.6.2) - Numerical examples on current mirror and its applications (Part-B)

Practice: DC and Small Signal Analysis

Lesson 87.6.2Numerical examples on current mirror and its applications (Part-B)

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11 questions

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6 sample questions

Question 1.
What is the primary function of a current mirror?
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Think about the purpose of mirroring currents.
Question 2.
What is a cascode transistor?
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Consider its placement in a circuit.
3Question 3.
What is the main advantage of using a cascode transistor in a current mirror?
- A. Increase bandwidth
- B. Increase output resistance
- C. Decrease power consumption
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Think about the role of cascode in stabilizing circuits.
4Question 4.
True or False: The output resistance of a current mirror decreases when a cascode configuration is used.
- True
- False
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Consider what happens to resistance when transistors are cascaded.
Question 5.
Design a BJT current mirror that incorporates a cascode configuration. Calculate the required resistor values for biasing and determine the output resistance based on given parameters.
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Consider both transistors' characteristics and the guidelines for biasing.
Question 6.
Given an n-channel MOSFET current mirror with specific g_m and r_o parameters, compute the output current when the input voltage fluctuates within specified limits.
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Look back at the formula connecting input voltage change to output changes.

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