ECE-342 Test 3: Nov 29, 2011
6:00-8:00, 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
ECE-342 Test 3: Nov 30, 2010
6:00-8:00, 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
ECE-342 Test 1: Sep 27, 2011
6:00-8:00, 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
ECE-342 Test 2: Nov 1, 2011
6:00-8:00, 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
ECE-342 Test 1: Sep 28, 2010
6:00-8:00, 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
ECE-342 Test 2: Nov 2, 2010
6:00-8:00, 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
ECE-342 Test 1: Sep 29, 2009
6:00-8:00pm, 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
ECE-342 Test 3: Dec 1, 2009
6:00-8:00pm, 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 2-stage amplier shown below. Assume that 1 =
2 = 100, VA1 = 75 V, VA2 =
ECE-342 Test 2: Nov 3, 2009
6:00-8:00pm, 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
ECE-342 Test 2, Nov 4, 2008
6:00-8:00pm, 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
ECE-342 Test 3, Dec 2, 2008
6:00-8:00pm, Closed Book (one page of hand-written notes allowed)
Please use VT = kT /q = 25.8 mV at 300K for your calculations
1. Consider the 2-stage amplier shown below. Draw the small-signal model appropriate for nding the
ECE-342 Test 1, Sept 30, 2008
Two Hours, Closed Book (one page of notes allowed)
1. You are to use a commercial op-amp to design an inverting amplier with gain G0 = 3 V/V (measured at
DC). Your amplier should have a 3-dB bandwidth of at least 500 kHz, and
ECE-342 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
ECE-342 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 4-volt peak sinusoid. Assuming the voltage-drop model for the
diode, with Von = 0.7 V, sketch and carefully label the output
ECE-342 Test 3, Dec 4, 2007
6:00-8:00pm, Closed Book (one page of hand-written notes allowed)
Please use VT = kT /q = 25.8 mV at 300K for your calculations
1. Consider the 2-stage amplier shown below. Assume that the all capacitors are large, so that at m
ECE-342 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
ECE-342 Test 2, Nov 6, 2007
6:00-8:00pm, 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
ECE-342 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
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ECE342
SolidStateDevices&Circuits
11.OperationalAmplifiers
Jose E. Schutt-Aine
Electrical & Computer Engineering
University of Illinois
[email protected]
ECE342 JoseSchuttAine
1
Operational Amplifiers
Universal importance (e.g. amplification from mic
ECE342
2.PNJunctionsandDiodes
Jose E. Schutt-Aine
Electrical & Computer Engineering
University of Illinois
[email protected]
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. Schutt-Aine
Electrical & Computer Engineering
University of Illinois
[email protected]
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. Schutt-Aine
Electrical & Computer Engineering
University of Illinois
[email protected]
ECE342 JoseSchuttAine
1
Digital Logic - Generalization
De Morgans Law
A + B + C + . = A B C .
A B C .
ECE 342
Homework #9
Prof. Jose Schutt-Ain
Total Points: 100 points
1. (15 pts) Derive the input resistance, output resistance, and voltage gain for the
following two-stage NMOS amplifiers: (common gate-common source), (common
gate-common gate), and (commo
Homework #8
ECE 342
Prof. Jose Schutt-Ain
Total Points: 100 points
1. (15 pts) A Common-Gate (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 Schutt-Ain
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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