33.2. Prof. Pradip Mandal

Try these first

1. 1.

   What is the formula for voltage gain (A_v)?

   Hint

   Consider the relationship between output and input resistances.

2. 2.

   Define transconductance (g_m).

   Hint

   Think about the current-voltage relationship in amplifiers.

3. 3.

   What is the voltage gain formula for a Common Source Amplifier?

   • AV = -RGm
   • AV = RGm
   • AV = -RDg
   • AV = RDg

   Hint

   Focus on the roles of resistance and transconductance.

4. 4.

   True or False: The input resistance of a Common Source Amplifier is zero.

   • True
   • False

   Hint

   Consider how resistors are connected in the circuit.

5. 5.

   Consider a Common Source Amplifier with an input signal of 1V and R_D as 2 Ω. If g_m is 4 mA/V, calculate the output voltage.

   Hint

   Remember the voltage gain formula.

6. 6.

   If a high-frequency oscillation leads to a decrease in gain due to Miller capacitance, what can be done to mitigate this effect?

   Hint

   Think of ways to manage capacitance.