Signal Generators
Basic Wien-Bridge Oscillator
A = vo/vp = 1 + R2/R1
Vp=[Zp/(Zp+Zs)]Vo, where
Zp = R / 1/(jC2f), and
Zs = R + 1/(jC2f)
B(jf) = Vp /Vo = 1/[3 + j(f/f0 f0/f)]
F0 = 1/(2RC)
T(jf) = A B(jf)
Note that T(jf) approaches 0 for small and large f, a
t-
Problem
1:
v3
:12V
Assuming the outputistakenbetween two collectors
that
(differential
the
output),andpr=1gg
Al Determine Q-point the transistors
the
of
oF=* t39r+ t
)
T.=o( F (u*\
-t
(
v'I'r-K' /
ARer
'r
t V'e=-V/ Rrf'P.3iTa
[email protected]*.)ro
r,= (ffi: (,ff
Math 337 -Midterm Exam 2-Spring 2011
1.(25 points) a) Find the LU factorisation of A = [v1 v2 v3 ], where v1 = (1, 2, 1)T , v2 =
(3, 8, 3)T , v3 = (1, 4, 4)T .
b) Use part a) to nd det(A) and detL100 .
c) Use part a) to solve the system Ax = b with b = (4
t-
Problem1:
v3
:12V
Assuming
that the outputistakenbetweenthe two collectors(differential
output),andpr=1gg
Al Determinethe Q-pointof the transistors
oF=* t39r+ t
)
F (u*\
T.=o(
-t
(
v'I'r-K'
ARer/
t V'e=-V/ Rrf'P.3iTa'r
[email protected]*.)ro
r,=W?)
(ffi: (,ffi (W
Name:
ECE 372
Quiz #1
Fall 2011
15 min
C2
1uF
Vi
RI
C1
750
1uF
Q1
2N3904
RB
100k
RC
100k
R3
100k
Q-point is (40 A, 10 V), 0 = 100, VA = 75 V
100
75V 10V
g m 4040A1.60 mS | r
62.5 k | ro
2.13 M
1.60mS
40A
Rin RB r 100k 62.5k 38.5 k
38.5k
Av
1.6mS 2.13M
Name:
ECE 372
Midterm #1
1 sheet of notes
1H 20min
Spring 2011
Problem 1:
R1
100k
R2
100k
Q1
Q2
V3
12 V
V1
V2
R3
47k
V4
12 V
Assuming that the output is taken between the two collectors (differential output), and F=100
A] Determine the Q-point of the tran
Sample Midterm Examination #2
2 sheets of notes
1H 20min
Problem 1:
+15V
RC1
10k
RC2
10k
Q1
Q4
Q2
v0
v1
v2
RC4
R1
263k
Q3
R2
113k
R3
18.4k
-15V
All the transistors in the circuit have =110, V A =
Assuming that approximately IC3 = 220A and IC4 = 1.9mA,
A]
Chapter 16
Analog Integrated Circuit
Design Techniques
MOS Current Mirrors: DC Analysis
2I
REF
V
V
GS1 TN
K (1 V
)
n1
DS1
K
2
I I n V
V 1 V
TN
O D2
GS2
DS2
2
1 V
DS2 I
I I
REF
O REF
1 V
DS1
MOSFETs M1 and M2 are
assumed to have identical VTN,
Kn, , a
Nonlinear Circuits
VTC of an Ideal Comparator
Comparator Applications
Level Detector
For vI<VT, Q0 is off, LED is off
For vI>VT, Q0 saturates, LED glows
If vI=VCC, the circuit functions as an
overvoltage indicator.
If we interchange the inverting and
noni
Chapter 17
Amplifier Frequency Response
Short-Circuit Time Constant Method to
Determine L
Lower cutoff frequency for a
network with n coupling and
bypass capacitors is given by:
n
1
L
i 1 RiS Ci
Midband gain and upper and lower
cutoff frequencies that
Chapter 13
Small-Signal Modeling and Linear
Amplification
Graphics from Jaeger/Blalock
MicroelectronicCircuitDesign,3E,McGraw-Hill
Coupling and Bypass Capacitors
C1 and C3 are coupling capacitors or dc
blocking capacitors whose reactance at
frequencies of