ECE342 Test 3: Nov 29, 2011
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Unless otherwise stated, assume T = 300 K.
1. (21 pts) For the amplier shown below, evaluate the bias solution (taking into account the nite value
ECE342 Test 3: Nov 30, 2010
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Unless otherwise stated, assume T = 300 K.
1. (25 pts) Consider the amplier shown below.
(a) Solve for the DC bias conditions (Specify IE , IC , IB
ECE342 Test 1: Sep 27, 2011
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Use the physical constants and data as provided on the formula sheet
(the last page of the exam). Use of rounded values will result in points deduc
ECE342 Test 2: Nov 1, 2011
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Use the physical constants and data as provided on the formula sheet
(the last page of the exam). Use of rounded values will result in points deduct
ECE342 Test 1: Sep 28, 2010
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Use the physical constants and data as provided on the formula sheet
(the last page of the exam). Use of rounded values will result in points deduc
ECE342 Test 2: Nov 2, 2010
6:008:00, Closed Book
Name :
All solutions must provide units as appropriate. Use the physical constants and data as provided on the formula sheet
(the last page of the exam). Use of rounded values will result in points deduct
ECE342 Test 1: Sep 29, 2009
6:008:00pm, Closed Book
Name :
1. (20 pts) In the circuit below, the voltage vin may be assumed to be positive. Assume that the operational
amplier is ideal.
(a) (8 pts) Write the output voltage vout in terms of vin , R, the
ECE342 Test 3: Dec 1, 2009
6:008:00pm, Closed Book
Name :
Please use VT = kT /q = 25.8 mV at 300K for your calculations
1. Problems 1 through 3 all deal with various aspects of the 2stage amplier shown below. Assume that 1 =
2 = 100, VA1 = 75 V, VA2 =
ECE342 Test 2: Nov 3, 2009
6:008:00pm, Closed Book
Name :
All solutions must provide units as appropriate. Use the physical constants and data as provided on the formula sheet
(the last page of the exam). Use of rounded values will result in points dedu
ECE442
SolidStateDevices&Circuits
Review
Jose E. SchuttAine
Electrical & Computer Engineering
University of Illinois
jschutt@emlab.uiuc.edu
ECE342 JoseSchuttAine
1
Zth
Thevenin Equivalent
Network
Vth
+

Principle
Any linear twoterminal network consist
ECE342 Test 2, Nov 4, 2008
6:008:00pm, Closed Book (one page of notes allowed)
Please use the following physical constants in your calculations:
Boltzmanns Constant:
Electron Charge:
Free space Permittivity:
Thermal Voltage:
k = 8.62 105 eV/K = 1.38 102
ECE342 Test 3, Dec 2, 2008
6:008:00pm, Closed Book (one page of handwritten notes allowed)
Please use VT = kT /q = 25.8 mV at 300K for your calculations
1. Consider the 2stage amplier shown below. Draw the smallsignal model appropriate for nding the
ECE342 Test 1, Sept 30, 2008
Two Hours, Closed Book (one page of notes allowed)
1. You are to use a commercial opamp to design an inverting amplier with gain G0 = 3 V/V (measured at
DC). Your amplier should have a 3dB bandwidth of at least 500 kHz, and
ECE342 Test 2, Nov 7, 2006
Two Hours, Closed Book (one page of notes allowed)
Please use the following physical constants in your calculations:
Boltzmanns Constant:
Electron Charge:
Free space Permitivity:
Thermal Voltage:
k = 8.62 105 eV/K = 1.38 1023 J
ECE342 Test 1, Oct 3, 2006
Two Hours, Closed Book (one page of notes allowed)
1. In each of the circuits below, let vin (t) be a 4volt peak sinusoid. Assuming the voltagedrop model for the
diode, with Von = 0.7 V, sketch and carefully label the output
ECE342 Test 3, Dec 4, 2007
6:008:00pm, Closed Book (one page of handwritten notes allowed)
Please use VT = kT /q = 25.8 mV at 300K for your calculations
1. Consider the 2stage amplier shown below. Assume that the all capacitors are large, so that at m
ECE342 Test 3, Dec 5, 2006
Two Hours, Closed Book (one page of notes allowed)
Problems 1 through 3 deal with the design of an amplier which must provide 34 dB of gain, provide a 50 input
impedance, and must be capable of driving a load RL in the range 1
ECE342 Test 2, Nov 6, 2007
6:008:00pm, Closed Book (one page of notes allowed)
Please use the following physical constants in your calculations:
Boltzmanns Constant:
Electron Charge:
Free space Permittivity:
Thermal Voltage:
k = 8.62 105 eV/K = 1.38 102
ECE342 Test 1, Oct 2, 2007
Two Hours, Closed Book (one page of notes allowed)
1.
(a) The circuit network on the left is to be used as a voltage input, voltage output amplier (modeled on the
right). Find the voltage gain G = vo1 /vin and output impedance
SwitcherCAD III/LTspice
Getting Started Guide
Copyright 2008 Linear Technology. All rights reserved.
2
Benefits of Using SwitcherCAD III/LTspice
Stable SPICE circuit simulation with Outperforms payfor options
Unlimited number of nodes
Schematic/symbol ed
ECE342
SolidStateDevices&Circuits
11.OperationalAmplifiers
Jose E. SchuttAine
Electrical & Computer Engineering
University of Illinois
jschutt@emlab.uiuc.edu
ECE342 JoseSchuttAine
1
Operational Amplifiers
Universal importance (e.g. amplification from mic
ECE342
2.PNJunctionsandDiodes
Jose E. SchuttAine
Electrical & Computer Engineering
University of Illinois
jschutt@emlab.uiuc.edu
ECE342 JoseSchuttAine
1
Definitions
B: material dependent parameter = 5.4 1031 for Si
EG: Bandgap energy = 1.12 eV
k: Boltzma
ECE342
SolidStateDevices&Circuits
4.CMOS
Jose E. SchuttAine
Electrical & Computer Engineering
University of Illinois
jschutt@emlab.uiuc.edu
ECE342 JoseSchuttAine
1
Digital Circuits
VIH: Input voltage at high state
VIHmin
VIL: Input voltage at low state
V
ECE442
SolidStateDevices&Circuits
5.CMOSLogicCircuits
Jose E. SchuttAine
Electrical & Computer Engineering
University of Illinois
jschutt@emlab.uiuc.edu
ECE342 JoseSchuttAine
1
Digital Logic  Generalization
De Morgans Law
A + B + C + . = A B C .
A B C .
ECE 342
Homework #9
Prof. Jose SchuttAin
Total Points: 100 points
1. (15 pts) Derive the input resistance, output resistance, and voltage gain for the
following twostage NMOS amplifiers: (common gatecommon source), (common
gatecommon gate), and (commo
Homework #8
ECE 342
Prof. Jose SchuttAin
Total Points: 100 points
1. (15 pts) A CommonGate (CG) amplifier using an NMOS transistor for which
has a
drain resistance
and a load resistance
. The amplifier is driven by a
resistance.
voltage source having a
ECE 342
Homework #7
Prof. Jose SchuttAin
Total Points: 100 points
1. (30pts) For the circuit shown below, you are given VA=200V, VBEon = 0.7V,
=100, VCC=9V, R1=52 k, R2=41k, RC=2k, RL=750k, Rsig=2k, and
.
(a) Define RE=RE1+RE2. Find the value of RE that
E CE
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