65.3.1. Example Using BJT

Try these first

1. 1.

   What is a cascode amplifier?

   Hint

   Think about how it combines two transistors.

2. 2.

   What does the Miller effect imply for an amplifier?

   Hint

   Consider how feedback impacts input characteristics.

3. 3.

   What is the primary advantage of using a cascode amplifier?

   • Increased input capacitance
   • Higher voltage gain
   • Lower output resistance

   Hint

   Consider the impact of active loads.

4. 4.

   True or False: Increasing voltage gain affects bandwidth due to the Miller effect.

   • True
   • False

   Hint

   Recall how capacitance and gain interact.

5. 5.

   Design a cascode amplifier with a bias current of 3 mA and an active load resistance of 10 MΩ. Calculate the theoretical voltage gain.

   Hint

   Determine gain through R and g values.

6. 6.

   Discuss how using BJTs versus MOSFETs in cascode configurations affects input/output characteristics and overall performance in VLSI applications.

   Hint

   Compare attributes affecting circuit design.