Practice Small Signal Output Resistance (87.4.1) - Numerical examples on current mirror and its applications (Part-B)

Practice: Small Signal Output Resistance

Lesson 87.4.1Numerical examples on current mirror and its applications (Part-B)

Practise this section

9 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
What is the role of small signal output resistance in current mirrors?
Show hintHide hint
Think about why stability in circuits is important.
Question 2.
What does adding a cascode transistor do to the current mirror?
Show hintHide hint
Consider the effect on output current stability.
3Question 3.
What is the primary purpose of increasing small signal output resistance?
- To increase current draw
- To stabilize output current
- To reduce power consumption
Show hintHide hint
Think about circuit reliability.
4Question 4.
True or False: Adding a cascode transistor lowers the output resistance of a current mirror.
- True
- False
Show hintHide hint
Recall the effects of cascode configurations.
Question 5.
Design a cascode current mirror circuit that allows a constant output current of 1 mA despite a varying output voltage (assume a supply voltage of 15V). What are the required component values?
Show hintHide hint
Research transistor datasheets for g_m values and work through your saturation voltage requirements.
Question 6.
Given a BJT with an early voltage of 100V and a specified bias current, how will you calculate the output resistance? Demonstrate your calculations.
Show hintHide hint
Consider both the transistor parameters and your circuit configuration.

5 more questions in this section. Enroll free to practise them all.