Pretty much all of Fall 2024

7th-Semester-Fall-2024/VLSI/exams/exam-1/:wq

@@ -0,0 +1,49 @@
+from math import log
+
+L_n = 0.6E-6
+L_p = 0.6E-6
+K_n = 122E-6
+K_p = 61E-6
+C_ox = 33E-4
+V_tn = 0.7
+V_tp = -0.7
+
+# 2a
+V_gs = 5
+V_ds = 5
+V_dsat = V_gs - V_tn
+I_ds = 2.82E-3
+
+w_n = (2*I_ds*L_n) / (K_n * V_dsat**2)
+print("2a:", w_n)
+
+# 2b
+w_p = (2*I_ds*L_p) / (K_p * V_dsat**2)
+print("2b:", w_p)
+# 2c
+C_g = C_ox*w_n*L_n
+C_equiv = 12*C_g + 20E-15
+print("C_g:", C_g)
+print("C_equiv:", C_equiv)
+
+beta = K_n*w_n/L_n
+print("beta:", beta)
+
+I_sat = beta * (V_gs - V_tn)**2 / 2
+print("I_sat:", I_sat)
+t_sat = V_tn*C_equiv / I_sat
+print("t_sat:", t_sat)
+
+R = 1 / (K_n * (w_n/L_n) * (V_gs - V_tn))
+print("R:", R)
+tau = R*C_equiv
+print("tau:", tau)
+
+# v(t) = 0.5 = 4.3e^(-t/tau)
+t_lin = -tau*log(0.5/4.3)
+print("t_lin:", t_lin)
+t = t_lin + t_sat
+print("t:", t)
+# 2d
+
+# 2e