65.3. Numerical Examples

Try these first

1. 1.

   What is the effect of using an active load in a cascode amplifier?

   Hint

   Think about the difference between passive and active components.

2. 2.

   What is the small signal parameter g_m for the discussed cascode amplifier?

   Hint

   It is a key parameter causing voltage changes.

3. 3.

   What is the main advantage of using an active load in a cascode amplifier?

   • A) Increases complexity
   • B) Enhances gain
   • C) Only useful for high frequencies
   • D) None of the above

   Hint

   Think about the role of components that add power versus those that just resist.

4. 4.

   True or False: Using a passive load in a cascode amplifier results in higher gain than using an active load.

   • True
   • False

   Hint

   Consider how each load affects amplifier performance.

5. 5.

   Given a cascode amplifier with parameters: V_dd = 12V, R = 5MΩ, and I = 2mA, derive the input output relationships and calculate the expected gains.

   Hint

   Use Ohm's law and details from the session's calculations.

6. 6.

   Design a cascode amplifier that balances high gain and bandwidth. Discuss the possible trade-offs you'll face.

   Hint

   Reflect on the relationships and importance of maintaining quality in circuit design.