- #1
DragonChase29
Homework Statement
Homework Equations
- Id=K*(Vsg-Vth)2
- KVL
The Attempt at a Solution
On part A,
Haven't had much experience with PMOS. Used large signal model, to find Rs.
Equivalent circuit:
We know that Vs=0. That means Vd=-7.5 V. If we say the voltage across Rs is Vdd-Vd, then that voltage is 22.5 V. Used 22.5V/Id and got 7500 ohms.
Used the Id equation to find Vsg to be 7.5 V
Vsg=Vs-Vg, and Vs=0, so Vg=-7.5
Now,we know there are 2 unknowns, so we need 2 equations. The first equation, we used voltage division to be
- -7.5=15*(Rg2/(Rg1+Rg2))
- 3M=((Rg1)-1+(Rg2)-1)-1
- We disregard the 10km because it is so small in comparision
Any help is appreciated.