21.3. Department of Electronics and Electrical Communication Engineering

Try these first

1. 1.

   What does linearization entail in circuit analysis?

   Hint

   Think about the relationship between linear and non-linear components.

2. 2.

   Define transconductance (gₘ).

   Hint

   It's a parameter that indicates how input voltage affects the output current.

3. 3.

   What is the primary function of transconductance (gₘ)?

   • To measure voltage
   • To measure current
   • To quantify the relationship between current and voltage

   Hint

   Remember, it relates input voltage to output current.

4. 4.

   True or False: The output conductance (g_d) measures the effect of output voltage on the drain current.

   • True
   • False

   Hint

   Think about what happens when output voltage fluctuates.

5. 5.

   Design a small signal equivalent circuit for a given MOSFET parameters, including deriving the values for gₘ and g_d.

   Hint

   Focus on how small variations impact the overall circuit characteristics.

6. 6.

   A MOSFET amplifier has gₘ = 5 mA/V and the output resistance is 2 kΩ. Calculate the expected output voltage for an input of 10 mV.

   Hint

   Plug in the values into the equation properly.