64.6.1. Gain-Bandwidth Tradeoff

Try these first

1. 1.

   Define gain in the context of amplifiers.

   Hint

   Think about how much stronger the output is compared to the input.

2. 2.

   What does bandwidth refer to?

   Hint

   Consider the effective frequency limits of signal processing.

3. 3.

   What is the expected effect of increasing gain in an amplifier?

   • Increased bandwidth
   • Decreased bandwidth
   • No effect on bandwidth

   Hint

   Think about the relationship between gain and bandwidth.

4. 4.

   True or False: The gain-bandwidth product of an amplifier remains constant.

   • True
   • False

   Hint

   Is gain multiplied by bandwidth constant for different configurations?

5. 5.

   Design a cascode amplifier that balances gain and bandwidth for high-frequency RF signals. Describe your design choices.

   Hint

   Refer to circuit simulations or real-world devices for guidance.

6. 6.

   Given a cascode amplifier with a total output resistance of 10 MΩ and a capacitance of 100 pF, calculate the upper cutoff frequency.

   Hint

   Use the standard cutoff frequency formula for capacitive circuits.