Question

Final Exam 2013 edx 6.002x Q1 In this problem, we look at the design of an inverter. For the entirety of this problem Vs=50 , and all transistors are modeled with the SR model with Ron=80 We design the inverter shown in Figure 1.

Answer 1

The static discipine of the inverter is Vil=1.5V ,Vol=1V , Vih=3.4V, Voh=4V , and . What is the minimum resistance (in Ohms) that can be to meet this static discipline?

Answer 2

Vil<Vt<=Vih
Vs*(Ron/(Rl+Ron)<=Vol

Answer 3

@kai.kai.beyblade @Kuba222 have u solved Q1 Q2

Answer 4

NO !

Answer 5

@abdullatif92211 Did you got any of the answers?

Answer 6

not yet.. just trying to solve those... wat about u?? @kai.kai.beyblade

Answer 7

oh! even I started to solve! but I'm really screwed ! O.o @abdullatif92211

Answer 8

plz list all the questions here we will try togather

Answer 9

give me Q2 & 5 answers

Answer 10

Guys! Q3:: any one have the answer for Q3?
The circuits in this problem are driven by sinusoidal sources and are in the steady state. For each circuit, enter the letter corresponding to its magnitude and phase plot for the transfer funrction H(jw) =V0(jw)/Vi(jw) from the magnitude (A-F) and phase (G-L) plots sketched in the figures below. The magnitude plots are on a log-log scale and the phase plots are on a linear-log scale. Note these are sketches, look for correct approximate shape

Answer 11

what are qs?

Answer 12

cope ur figure paste here

Answer 13

or save ur figure as picture and then attach here in below menu

Answer 14

@fazal7 done!

Answer 15

plz anybody give answers of any Question.............

Answer 16

all of us guys should post the solutions here along parameters.

Answer 17

@Kuba222 tell me at least solution of one Question

Answer 18

Guys!! open up! put your answers here! Help needed badly!

Answer 19

plz anybody tell me at least one solution of any question

Answer 20

kaha gae sab bhai

Answer 21

hahahahaha kai kai dun worry i m trying.. :))

Answer 22

@abdullatif92211 Thanks mate!

Answer 23

@Kuba222 I'm trying to get the answers! Once finished I'll write down here, because I've to write the process too!

Answer 24

@kai.kai.beyblade what u have solved till now??

Answer 25

q2 part1 ans, id=2mA

Answer 26

PLZ POST Q3 AND Q4 HERE

Answer 27

FOR ID USE THIS FORMULA
ID=10V-V0/2K -4V/4K

Answer 28

I USE VALUE OF ABOVE GIVEN Q

Answer 29

@Tcher Do you have any solutions/?

Answer 30

guys plz help me with ques 3

Answer 31

@fazal7 please check the above attached ones!

Answer 32

Dear All, I've just crossed 60% and left at 63% ! My sincere thanks to @Kuba222, @Tcher and @halfwebprince and special thanks to @fazal7 and @abdullatif92211! With out them I could'nt have reached this milestone. I'm open for Final Qns 1, 2, and 3 Q4 and 5 were typical and left out!.

Answer 33

Q1 problem 2 ; Tr= -Rl*Cgs*ln((Vs-Voh)/Vs)
Q1 problem 5: Tf= -Rth*Cgs*ln((Vol-Vth)/(Vs-Vth)) Hope this will really help you out guys!

Answer 34

Q1 FULL:
Q1 problem 2 ; Tr= -Rl*Cgs*ln((Vs-Voh)/Vs)
Q1 problem 5: Tf= -Rth*Cgs*ln((Vol-Vth)/(Vs-Vth))
Q1 Problem 1: Vol= (Vs*Ron)/(Ron+r)

Have a blast ;)
Q1 Problem 3; Rl||Ron

probl 4; Tau= Rth*Cgs, where Rth= Ron||Rl

Answer 35

Guys! Help others too!! don't get away with only these answers, please do share!! Q4 and Q5 solutions are badly needed!! @Tcher Hope U'll receive the solutions.

Answer 36

Q1

In this problem, we look at the design of an inverter. For the entirety of this problem VS=7.0V, and all transistors are modeled with the SR model with RON=120Ω. We design the inverter shown in Figure 1.


Figure 1
The static discipine of the inverter is VIL=2V, VOL=1V, VIH=5V, and VOH=6V. What is the minimum resistance (in Ohms) that R can be to meet this static discipline?

unanswered

We now cascade two of these inverters shown in Figure 2. Assume that R=3kΩ. We want to ananlyze the speed of our inverter, so we model the parasitic capacitance at node B as the gate-to-source capacitance of the the second gate, CGS=0.3pF.


Figure 2
First we consider the case where the voltage at node B is rising. What is the time (in nanoseconds) after the falling edge at node A, that it takes for the signal at node B to rise from 0V to VOH=6V?
unanswered

Now we consider the case where the voltage at node B is falling. After the rising edge at node A, what is the Thevenin equivalent resistance (in Ohms) as seen by the gate-to-source capacitance, CGS?

unanswered
What is the time constant, τf (in picoseconds), for this falling transient voltage?
unanswered
What is the time (in picoseconds) that it takes for the signal at node B to fall from 7.0V to the value of VOL=1V?

Answer 37

somebody help me

Answer 38

plz tell me Q1 part 2 quetion plz tell me the answer?

Answer 39

R=3Kohm CGS=0.3pf Voh=6v Vol=1v plz tell me the this 4 answers . plzzzzzzzzzz

Answer 40

what happened?

Answer 41

Big problem)) need 5% but no idea about Q4 and Q5 at all(((

Answer 42

Tcher, have you completed that 1st answer?

Answer 43

yes?
yes

Answer 44

so only 4 and 5 are left?

Answer 45

i want some formulas? not the answers? if You can? please)

Answer 46

how much time you have Tcher?

Answer 47

10 hours)))

Answer 48

then don't worry. i'll solve that for you tomorrow and post the answer. more than enough time is remaining.

Answer 49

ok? i solving them too? but have no optimism)))))))))

Answer 50

if you solve just one question then you'll go pass the 60%

Answer 51

yes? but i am not at home? in other city? and work by phone)))))

Answer 52

Can someone help me with question 3 ?

Answer 53

yes question 3 is easy same for every person.

Answer 54

But please tell the answers , I dont know

Answer 55

chaand, i am opening my friends edx account

Answer 56

I didnt got you :-/

Answer 57

If u knw answer plz post

Answer 58

FWCYDX

Answer 59

i posted that off from my friends edx account.

Answer 60

Thanks man

Answer 61

Question 2 ?

Answer 62

Tcher knows the solution for Q2. ask him.

Answer 63

Q1
plz

Answer 64

okay, wajdanaqib. i am giving answers to one guy in chat. come there.

Answer 65

okay

Answer 66

I cannot come on chat, i m on mobile. Please post question 1 solution over here

Answer 67

chaand.i, the question differs from person to person. post your question1 parameters here.

Answer 68

Okay, thanks halfwayprince, I'll tell u once I get access to my desktop. Meanwhile, thanks man.

Answer 69

chaand.i you can give me medal if you like.

Answer 70

Take it from me)

Answer 71

Oh thank you friend. I'll surely give you that 4th or 5th answer as soon as i can.

Answer 72

Do not thank me, doing a good job)

Answer 73

and what is wrong?

Answer 74

(in picoseconds

Answer 75

formula is correct Tf= -Rth*Cgs*ln((Vol-Vth)/(Vs-Vth))

Answer 76

WHAT IS Vth

Answer 77

V Thevenin

Answer 78

i mean its value? VIL=2.5V, VOL=1.5V, VIH=7.5V, and VOH=8.5V , RON=200Ω ,VS=10.0V
What is the time (in picoseconds) that it takes for the signal at node B to fall from 10.0V to the value of VOL=1.5V?

Answer 79

i donno how to calculate v th here

Answer 80

Tf= -Rth*Cgs*ln((Vol-Voh)/(Vs-Voh))

Answer 81

@Tcher part 5 man.... also can u help me with q4 and 5 ??

Answer 82

i dont know the answers? but .......... working hard)))))))

Answer 83

Tcher GL

Answer 84

what is vth?

Answer 85

Any help please with the new final exam?