Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
7th Edition
ISBN: 9780199339136
Author: Adel S. Sedra, Kenneth C. Smith
Publisher: Oxford University Press
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Chapter 1, Problem 1.66P
To determine
To identify: The corresponding currents and voltages and the relation between the parameters of the amplifier equivalent circuit and g parameters of the given circuit.
To find: A g parameter that has no correspondence in the amplifier equivalent circuit along with its significance. Also, the assumption for amplifier that resulted in the absence of g parameter from the equivalent circuit of amplifier.
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Rsig
Ro1
Ro2
Ro3 I
Ri3
Vsig
Av1"Vin1
Av2*Vin2
Av3 Vin3
RL
Given this two-port representation of an op amp with stage 1 being the diff pair,
stage 2 being the middle gain, and stage 3 being the output circuit, calculate the
overall voltage gain from Vsig to load RL.
Rsig=50 Ohms,
Ri1=20k,
Av1=400, Ro1=1k,
Ri2= 5k,
Av2=200, Ro2=1k,
Ri3=100k, Av3=0.9,
Ro3=40 Ohms
and RL = 100 Ohms
42327
O 27436
O 21825
O 30703
3. A hybrid model amplifier is shown below. The parameters are h₁1 = 45ohms, h₂1 = 80, h22 =
12.5 us and h₁2 = 5 x 104. Select RL so that the current gain i₂/i₁ = 79 and the input resistance of
the circuit is less than 10 ohms.
h11
h2141
D
h22 0₂
RL
U1
h1202
1. Assume that the gm of Q, is 1500 umhos for the amplifier in the following figure.
a.
Compute.
b.
If gm = 1500 umho, what is the voltage gain?
What is You?
d. What is the purpose of C₂? What happens if it is open?
C.
V
200 mV pp
10 kHz
HI
0.1 μF
WI
Ra
1.0 MO
+VDD
+15 V
RD
6.2 k0 C3
-EE
-15 V
9₂₁
2N5458
l₂
2N3904
RE
15 ΚΩ
0.1 μF
22 μF
Chapter 1 Solutions
Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
Ch. 1.1 - Prob. 1.1ECh. 1.1 - Prob. 1.2ECh. 1.1 - Prob. 1.3ECh. 1.1 - Prob. 1.4ECh. 1.2 - Prob. 1.5ECh. 1.2 - Prob. 1.6ECh. 1.2 - Prob. 1.7ECh. 1.2 - Prob. 1.8ECh. 1.3 - Prob. 1.9ECh. 1.4 - Prob. 1.10E
Ch. 1.4 - Prob. 1.11ECh. 1.5 - Prob. 1.12ECh. 1.5 - Prob. 1.13ECh. 1.5 - Prob. 1.14ECh. 1.5 - Prob. 1.15ECh. 1.5 - Prob. 1.16ECh. 1.5 - Prob. 1.17ECh. 1.5 - Prob. 1.18ECh. 1.5 - Prob. 1.19ECh. 1.5 - Prob. 1.20ECh. 1.5 - Prob. 1.21ECh. 1.6 - Prob. 1.22ECh. 1.6 - Prob. D1.23ECh. 1.6 - Prob. D1.24ECh. 1 - Prob. 1.1PCh. 1 - Prob. 1.2PCh. 1 - Prob. 1.3PCh. 1 - Prob. 1.4PCh. 1 - Prob. 1.5PCh. 1 - Prob. 1.6PCh. 1 - Prob. 1.7PCh. 1 - Prob. D1.8PCh. 1 - Prob. D1.9PCh. 1 - Prob. 1.10PCh. 1 - Prob. D1.11PCh. 1 - Prob. D1.12PCh. 1 - Prob. D1.13PCh. 1 - Prob. 1.14PCh. 1 - Prob. 1.15PCh. 1 - Prob. 1.16PCh. 1 - Prob. 1.17PCh. 1 - Prob. 1.18PCh. 1 - Prob. 1.19PCh. 1 - Prob. 1.20PCh. 1 - Prob. 1.21PCh. 1 - Prob. 1.22PCh. 1 - Prob. 1.23PCh. 1 - Prob. 1.24PCh. 1 - Prob. 1.25PCh. 1 - Prob. 1.26PCh. 1 - Prob. 1.27PCh. 1 - Prob. 1.28PCh. 1 - Prob. 1.29PCh. 1 - Prob. 1.30PCh. 1 - Prob. 1.31PCh. 1 - Prob. 1.32PCh. 1 - Prob. 1.33PCh. 1 - Prob. 1.34PCh. 1 - Prob. 1.35PCh. 1 - Prob. 1.36PCh. 1 - Prob. 1.37PCh. 1 - Prob. 1.38PCh. 1 - Prob. 1.39PCh. 1 - Prob. 1.40PCh. 1 - Prob. 1.41PCh. 1 - Prob. 1.42PCh. 1 - Prob. 1.43PCh. 1 - Prob. 1.44PCh. 1 - Prob. 1.45PCh. 1 - Prob. 1.46PCh. 1 - Prob. 1.47PCh. 1 - Prob. 1.48PCh. 1 - Prob. D1.49PCh. 1 - Prob. D1.50PCh. 1 - Prob. D1.51PCh. 1 - Prob. D1.52PCh. 1 - Prob. 1.53PCh. 1 - Prob. 1.54PCh. 1 - Prob. 1.55PCh. 1 - Prob. 1.56PCh. 1 - Prob. D1.57PCh. 1 - Prob. 1.58PCh. 1 - Prob. D1.59PCh. 1 - Prob. D1.60PCh. 1 - Prob. D1.61PCh. 1 - Prob. D1.62PCh. 1 - Prob. 1.63PCh. 1 - Prob. 1.64PCh. 1 - Prob. 1.65PCh. 1 - Prob. 1.66PCh. 1 - Prob. 1.67PCh. 1 - Prob. 1.68PCh. 1 - Prob. 1.69PCh. 1 - Prob. D1.70PCh. 1 - Prob. 1.71PCh. 1 - Prob. 1.72PCh. 1 - Prob. 1.73PCh. 1 - Prob. 1.74PCh. 1 - Prob. D1.75PCh. 1 - Prob. D1.76PCh. 1 - Prob. 1.77PCh. 1 - Prob. 1.78PCh. 1 - Prob. D1.79PCh. 1 - Prob. 1.80PCh. 1 - Prob. 1.81P
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