64.3. Change in R

Try these first

1. 1.

   What is a cascode amplifier?

   Hint

   Think about how amplifiers can be configured.

2. 2.

   What happens to output resistance when we increase input resistance?

   Hint

   Consider the impact of loading effects.

3. 3.

   What is the primary advantage of using a cascode amplifier?

   • Higher input capacitance
   • Increased gain
   • Lower bandwidth

   Hint

   Focus on the benefits of cascading stages.

4. 4.

   True or False: Increasing the output resistance can improve the voltage swing of an amplifier.

   • True
   • False

   Hint

   Consider the effect on load conditions.

5. 5.

   Design a cascode amplifier with specified resistance values. Calculate its expected gain and bandwidth, considering a standard load capacitance.

   Hint

   Break down the calculations step by step.

6. 6.

   Evaluate how a significant increase in input capacitance might impact a cascode amplifier's performance in a practical circuit.

   Hint

   Relate your analysis to the Miller effect.