64.5.2. Resistance and Capacitor Interaction

Try these first

1. 1.

   What is the corrected value of capacitance discussed in this section?

   Hint

   Refer to the capacitance calculation discussed.

2. 2.

   What advantage do cascode amplifiers have over standard CE amplifiers?

   Hint

   Think about how output resistance impacts performance.

3. 3.

   What is the primary advantage of a cascode amplifier?

   • Increased complexity
   • Higher gain and bandwidth
   • Reduced input impedance

   Hint

   Think about how the configuration affects performance.

4. 4.

   True or False: The Miller effect decreases the effective capacitance seen at the input of an amplifier.

   • True
   • False

   Hint

   Recall the feedback impact on capacitance.

5. 5.

   Design a cascode amplifier achieving a gain of 100 with a bandwidth of at least 300 kHz. Specify component values and justify each selection.

   Hint

   Refer to the relationship between gain and resistance for guidance.

6. 6.

   Given a circuit with a 12V supply and a cascode configuration, predict the impact on both gain and bandwidth if the load capacitance is increased to 200 pF.

   Hint

   Use the capacitive effect formula to assess changes.