34.1. Common Source Amplifier (Contd.)

Try these first

1. 1.

   What is the threshold voltage for a MOSFET?

   Hint

   Think about the condition for the device to start conducting.

2. 2.

   Define output swing in the context of amplifiers.

   Hint

   Consider the limits of the amplifier's output voltage.

3. 3.

   What is the purpose of bias resistors in a common source amplifier?

   • To amplify the signal
   • To set the operating point
   • To improve frequency response

   Hint

   Think about why we establish a DC level in amplifiers.

4. 4.

   True or False: The output swing is influenced by both the supply voltage and the threshold voltage.

   • True
   • False

   Hint

   Recall the definitions of output limits.

5. 5.

   Design a common source amplifier to achieve a 14V output swing using a 20V supply. Describe all steps and calculations.

   Hint

   Use operating point calculations to find balance.

6. 6.

   Given an amplifier with a gain of 10 and an RD of 1k ohm, determine the required drain current if VGS is 3V, and VTH is 1.5V.

   Hint

   Link gain and drain current using their formulas for understanding.