2. Electronics and Devices

Mosfet Circuits — Quiz

Test your understanding of mosfet circuits with 5 practice questions.

Practice Questions

Question 1

Which primary benefit does adding a cascode transistor to a common-source MOSFET amplifier provide?

Question 2

In a source-follower (common-drain) stage powered by supply voltage $V_{DD}$, what is the maximum peak input voltage $V_{in(max)}$ to avoid driving the MOSFET into cutoff?

Question 3

Which expression approximates the small-signal voltage gain $A_v$ of a common-source MOSFET amplifier with unbypassed source degeneration resistor $R_S$?

Question 4

Given a MOSFET amplifier with $g_m=5\,\mathrm{mS}$, $R_D=20\,\mathrm{k\Omega}$, and unbypassed $R_S=200\,\Omega$, what is the approximate midband voltage gain $A_v$?

Question 5

In MOSFET small-signal analysis, which term describes the increase in effective input capacitance due to feedback through the gate-drain capacitance $C_{gd}$?