63.7.1. Voltage Gain Comparison

Try these first

1. 1.

   Define voltage gain.

   Hint

   Think about what output and input voltages are in an amplifier.

2. 2.

   What does input capacitance affect in amplifiers?

   Hint

   Recall how capacitance can limit frequency transmission.

3. 3.

   What is the primary advantage of cascode amplifiers over common emitter amplifiers?

   • Higher voltage gain.
   • Lower input capacitance.
   • Easier to build.

   Hint

   Think about frequency response in relation to capacitance.

4. 4.

   True or False: The voltage gain for cascode amplifiers is generally lower than for common emitter amplifiers.

   • True
   • False

   Hint

   Recall the benefits of signal integrity.

5. 5.

   Design a voltage amplifier circuit using a four-stage cascode amplifier with varying collector currents. What considerations must you take into account for maximum gain and bandwidth?

   Hint

   Refer back to key concepts about voltage gain and input/output resistance.

6. 6.

   You have a BJT cascode amplifier with a load capacitance of 100pF. What is the impact on the overall frequency response if this capacitance increases significantly?

   Hint

   Think about how capacitance interacts with resistance in frequency calculations.