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Unformatted text preview: EECE 416/501, Fall 2008 Name: go him This exam is to be completed individually, but you may use your notes.
Be sure to put your name on every sheet of paper. The goal of the University is to uphold the highest standards of academic honesty to protect the value
of the degrees conferred upon its graduates. As such, academic dishonesty, including cheating helping
others to cheat, and plagiarism, will not be tolerated. The ﬁrst instance of academic dishonesty will
' result in __a 0 grade for the assignment, quiz, or exam. The second incident will result in a failing grade for
the course with no exceptions. All incidents of academic dishonesty will be reported to the University. Academic
Honesty
Policy ., 1. (15%) Choose the'expre’ssion below that best describes the output resistance for each circuit.
Assume the electrical properties of the iiFETs and pFETs. are the same (r0 = ron = rep, etc). Also
assume that the bias and cascode voltages are properly set and held constant. You may use each
answer more than once ornot at all. ‘ ' 5V 21“ 2'1‘o A rO E 7“a 2 B gs  rO F gS  r2 C (gsrim G (gsro)/gm D 1/gm H None of these December 4, 2008 Exam 2 1/6 Name: £0 /M7LI‘D n 2. (15%) Determine the value of the currents, 11 and 12, and the missing W/L. EECE 416/501, Fa112008 5V December 4, 2008 Exam 2 2/6 EECE 416/501, Fall 2008 Name: 47%
/ Use this table of parameters for this and all further problems. ( ) 3. (15%) Sketch the magnitude response of this low—pass OTAC ﬁlter. Assume all transistors have a W /L ratio of 1. Ignore parasitic capacitance. Clearly indicate (and calculate) the frequency of any
poles and zeros. v/oe.
Raft“ A
(I)
'0
v
d.)
"O
:3
u
.—4
C
50
'2“ Frequency (Hz) December 4, 2008 Exam 2 3/6 EECE 416/501, Fall 2008 Name: é& /6c 7L. “1 4. (15%) Determine the transfer function of this circuit in terms of T1 and 7'2, where 71 = Cl/GMl and
72 = 02 GM. Assume the am liﬁers have inﬁnite out ut im edauce. Clearl Show our work.
P . G M‘ : 5mg was) » 1/4») 4‘ Vols) ) M if; 5
5 vm9%BVM0449L4W‘J
5 0 .i t ' pm is December 4, 2008 Exam 2 4/6 I
EECE 416/501, Fall 2008 Name: 50 /“ W’l 5. (20%) Circle the value that best corresponds to V1, V2, ll, 12, Ix, and Avd in steady state or
differential mode operation. Assume that the inputs are biased properly and that the ampliﬁer
operates in the high—gain region. Also assume that there is no load. None of these None of these None of these None of these None of these None of these December 4, 2008 Exam 2 5/6 Name: 40 /M7Ll0 VI 6. (20%) Calculate a numerical value for the differential gain of this ampliﬁer. Also show the
numerical values for the transconductance and output impedance. Assume that W/L = 3 for all
nFETs, W/L = 9 for all pFETs, and the early voltage, VA, is 10 V for all transistors. EECE 416/501, Fall 2008 V V DD DD December 4, 2008 Exam 2 6/6 ...
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 Fall '09
 Twigg

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