Consider the circuit in Figure $1.$

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graph

$.$model M NMOS Vto$=1$ Kp$=1$m L$=1$u W$=2$u $.$dc VGS $0120\mathrm{.}1$

Figure $1$: MOSFET Circuit to measure Transfer Curve.

$1$a$)10$ points: Simulate the circuit of Figure $1$ and plot the transfer curve $i_D=f(v_{GS}).$

$1$b$)10$ points: From this plot, measure the threshold voltage $V_1.$

Measured $V_t=$

$1$c$)20$ points: Complete the table below. On the left column, display the calculated values of the current $i_D$ using the equation $i_D=K(v_{GS}-V_t{)}^2$ where $K-=\frac{1}{2}{K}^{\text{'}}(\frac{W}{L}).$ On the right column, enter the calculated values of the current $i_D$ measured from the plot.

$\backslash$table$[[v_{GS}[V],$Theoretical value of $i_D[mA],$Measured value of $i_D[mA]$