Practice Mosfet Capacitances (4.6) - MOSFETs - Basic Operation and Characteristics
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MOSFET Capacitances

Practice - MOSFET Capacitances

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What does Cgs stand for?

💡 Hint: Think about the terminals involved.

Question 2 Easy

What is the typical value range for Cgd?

💡 Hint: Consider the scale of the capacitance.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What is the expression for gate-source capacitance (Cgs)?

Cgs = WL
Cgs = (2/3) WL Cox
Cgs = W/L

💡 Hint: Remember the importance of the gate oxide.

Question 2

True or False: Cgd affects the frequency response of a MOSFET.

True
False

💡 Hint: Think about reaction speeds in circuits.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

In a specific MOSFET, the gate-source capacitance is critical for a timing circuit operating at 2 GHz. Discuss strategies to minimize Cgs while maintaining performance.

💡 Hint: Consider both geometric and material properties.

Challenge 2 Hard

A design requires a low Cdb to improve performance. If the substrate doping is increased, predict how that will affect Cdb and the implications for device operation.

💡 Hint: Think about trade-offs between speed and leakage.

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Reference links

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