Disclaimer: These are notes taken before the exam not ment as a readable solution. There is no guarantee for correctness nor completness of the solutions sketched here! Other solutions can also be correct.


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Task 1:

R=200e3;
C=10e-9;
f=25e3;
VD=0.2;
Vr=(Vp-VD)/C/R/f


Vr =

    0.0160


When not taking VD into account:

Vr = 

    0.020


--


Task 2:

function [rds]=drainresistance(V_ov,k_n)
if V_ov>0
    r_ds= 1/(k_n*V_ov);
else
    VT=26e-3;
    IS=2*k_n*VT^2;
    r_ds= 1/(IS*exp(V_ov/VT)/VT);
end;


--


Task 3:

function [V_OVp]=pMOSOverdrive(V_OVn)
V_OVp=V_OVn*sqrt(2.2)
end;


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Task 4:

function [Ai1,Ai2]=CurrentConveyor(RS,RL,gm,ro)

Ai1=RS/(RS+RL);
Ai2=RS/(RS+1/gm+RL/(gm*ro));
%Ai2=RS/(RS+(ro+RL)/(1+gm*ro)); %more precisely


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Task 5:


%RO*RL/(RO+RL)=2/3*RO

%1/RL+1/RO=3/2*RO

RL=30e3;

RO=0.5*RL;

%RO=15e3

%Gm*RO=18

Gm=18/RO

%Gm=1.2e-3


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Task 6:

wp1=100;
beta=0.1;
wt=wp1*10^(42/20)*beta

% for 60deg PM from table in lecture:
% wt/wp2=0.580

wp2=wt/0.58


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Task 7:

Port 1
Port 6


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Task 8:

See illustration in file 'LogicGateExampleNPsolution.png'


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Task 9:


See illustration in figure 'expDecayCount.png'