I found the following problem in the Rashid book of microelectronic circuits. I am looking to solve it but I don't even know where to start. How can I solve everything? What results do you get so I can compare?
The MOSFET amplifier of Fig. P5.33 has:
- \$R_S=500\Omega\$
- \$R_D=R_L=5k\Omega\$
- \$R_{G_1}=7M\Omega\$
- \$R_{G_2}=5M\Omega\$
- \$K_p=20\frac{mA}{V^2}\$
- \$V_t=3.5V\$
- \$\left\lvert{}V_M\right\rvert=200V\$
- \$V_{DD}=12V\$
Calculate:
- The input resistance \$R_{in}=\dfrac{v_s}{i_s}\$.
- The no-load voltage gain \$A_{v_O}=\dfrac{v_O}{v_g}\$.
- The output resistance \$R_O\$.
- The overall voltage gain \$A_v=\dfrac{v_L}{v_s}\$.
Best Answer
1 .first find out DC biasing values using voltage division to find \$ r_o= \frac{|V_A|} {I_D} \$ and \$g_m=\frac{2I_D}{V_{ov}}\$
2 . Draw this small signal equivalent circuit for MOSFET.
simulate this circuit – Schematic created using CircuitLab
3.Find the values of