Question

lab6

Answer 1

1) 687
2) .193
3) 643
4) .5011
5) .6
6) 3.45
7) 1.8

Answer 2

Run Tran: Final output voltgage = 193 mV

1) Voltage divider equation for output voltage
0.193 = VS*RON/(RON+RL)
Vs=3, RL=10000
Solving, RON=688ohm

2)Vthevenin = VSRON/(RON+RL)
so, Vthevenin = 3*688/(688+10000) = 0.193V

3) Rthevenin = RL || RON = 688*10000/(688+10000) = 643.17 ohms

4) Using Vc(t) = Vth + (Vs-Vth)e^(-t/RthCGS)
Vc(t) = 0.25, Vth = 0.193, Vs=3, Rth = 643.17, CGS = 2*10^-13
Solving, t = 0.5ns

5) Rising tpd = 0.6ns
6) Falling tpd = 3.45ns

Answer 3

7) Run Tran: Measure cycle time: approx (23.75-7.625)=16.125
Dividing by 9, we get 1.79ns