Basic MOSFET Characteristics

For the following problem, assume we have the following pFET device with the voltage sources and output current as shown.  You can assume that these devices have no back-gate effects, Vdd = 3V, and the threshold voltage is 1V.  Identify all important regions and breakpoints in your plots.

 

a.)  Plot below the relationship, both in linear and log-scale, between I and V_g,  assuming V_d = 0.

b.)  Plot below the relationship between I and V_d  for three different gate voltages.  In one plot assume all three currents are in subthreshold, and in the other plot assume all three currents are in above threshold.