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 2, Problem 2.27P
(a)
To determine
To show: Reduction in the gain of op-amp
(b)
To determine
Minimum nominal value of Awhich will limit the change to 0.1%.
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Problem#2
CMPR
Determine the output voltage of an op-amp for input voltages of V, = 150 µV, V½ =
140 µV. The amplifier has a differential gain of Aq = 4000 and the value of CMRR
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(a) 100./
(b) 10*. /
conclusion about which scenorio is better, and why?
INTERNAL CIRCUITRY OF OP-AMP:
9 Make a
+Vcc
INPN
Q4
Q5
Input 1
Q1
Q2
Input 2
Q8 PNP
Q3
Push-pull amplifier
Q6
-Vcc
Differential amplifier Input
stage
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Thumbnails v
You are required to design an inverting amplifier, based on an op-amp with an open-loop gain which varies in magnitude with frequency as shown in the graph below. Your amplifier must operate at a frequency of 100 kHz.
What value for the open-loop gain should you use to design the amplifier?
click here for image
18
O Infinity
O 1000
SO 100
O 10
120
100
80
60
40
20
0
10⁰
10¹
Magnitude of Open-loop gain vs Frequency
10²
10³
Frequency (Hz)
104
105
106
You are required to design an inverting amplifier, based on an op-amp with an open-loop
gain which varies in magnitude with frequency as shown in the graph below. Your amplifier
must operate at a frequency of 100 kHz. What value for the open-loop gain should you use
to design the amplifier?
click here for image
O
dB
100
1000
Infinity
10
120
100
80
60
40
20
0
100
101
Magnitude of Open-loop gain vs Frequency
10²
10³
Frequency (Hz)
104
105
106
G
Chapter 2 Solutions
Microelectronic Circuits (The Oxford Series in Electrical and Computer Engineering) 7th edition
Ch. 2.1 - Prob. 2.1ECh. 2.1 - Prob. 2.2ECh. 2.1 - Prob. 2.3ECh. 2.2 - Prob. D2.4ECh. 2.2 - Prob. 2.5ECh. 2.2 - Prob. 2.6ECh. 2.2 - Prob. D2.7ECh. 2.2 - Prob. D2.8ECh. 2.3 - Prob. 2.9ECh. 2.3 - Prob. 2.10E
Ch. 2.3 - Prob. D2.11ECh. 2.3 - Prob. 2.12ECh. 2.3 - Prob. 2.13ECh. 2.3 - Prob. 2.14ECh. 2.4 - Prob. 2.15ECh. 2.4 - Prob. D2.16ECh. 2.4 - Prob. 2.17ECh. 2.5 - Prob. 2.18ECh. 2.5 - Prob. D2.19ECh. 2.5 - Prob. D2.20ECh. 2.6 - Prob. 2.21ECh. 2.6 - Prob. 2.22ECh. 2.6 - Prob. 2.23ECh. 2.6 - Prob. 2.24ECh. 2.6 - Prob. 2.25ECh. 2.7 - Prob. 2.26ECh. 2.7 - Prob. 2.27ECh. 2.7 - Prob. 2.28ECh. 2.8 - Prob. 2.29ECh. 2.8 - Prob. 2.30ECh. 2 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Prob. 2.4PCh. 2 - Prob. 2.5PCh. 2 - Prob. 2.6PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.9PCh. 2 - Prob. 2.10PCh. 2 - Prob. 2.11PCh. 2 - Prob. D2.12PCh. 2 - Prob. D2.13PCh. 2 - Prob. D2.14PCh. 2 - Prob. 2.15PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.18PCh. 2 - Prob. 2.19PCh. 2 - Prob. D2.20PCh. 2 - Prob. 2.21PCh. 2 - Prob. 2.22PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - Prob. D2.26PCh. 2 - Prob. 2.27PCh. 2 - Prob. 2.28PCh. 2 - Prob. D2.29PCh. 2 - Prob. 2.30PCh. 2 - Prob. 2.31PCh. 2 - Prob. 2.32PCh. 2 - Prob. D2.33PCh. 2 - Prob. D2.34PCh. 2 - Prob. D2.35PCh. 2 - Prob. 2.36PCh. 2 - Prob. D2.37PCh. 2 - Prob. D2.38PCh. 2 - Prob. D2.39PCh. 2 - Prob. D2.40PCh. 2 - Prob. D2.41PCh. 2 - Prob. D2.42PCh. 2 - Prob. 2.43PCh. 2 - Prob. D2.44PCh. 2 - Prob. D2.45PCh. 2 - Prob. D2.46PCh. 2 - Prob. D2.47PCh. 2 - Prob. D2.48PCh. 2 - Prob. 2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. D2.51PCh. 2 - Prob. D2.52PCh. 2 - Prob. 2.53PCh. 2 - Prob. 2.54PCh. 2 - Prob. 2.55PCh. 2 - Prob. D2.56PCh. 2 - Prob. 2.57PCh. 2 - Prob. 2.58PCh. 2 - Prob. 2.59PCh. 2 - Prob. 2.60PCh. 2 - Prob. D2.61PCh. 2 - Prob. 2.62PCh. 2 - Prob. 2.63PCh. 2 - Prob. 2.64PCh. 2 - Prob. 2.65PCh. 2 - Prob. 2.66PCh. 2 - Prob. D2.67PCh. 2 - Prob. 2.68PCh. 2 - Prob. D2.69PCh. 2 - Prob. 2.70PCh. 2 - Prob. D2.71PCh. 2 - Prob. 2.72PCh. 2 - Prob. 2.73PCh. 2 - Prob. 2.74PCh. 2 - Prob. 2.75PCh. 2 - Prob. D2.76PCh. 2 - Prob. 2.77PCh. 2 - Prob. 2.78PCh. 2 - Prob. 2.79PCh. 2 - Prob. D2.80PCh. 2 - Prob. 2.81PCh. 2 - Prob. D2.82PCh. 2 - Prob. D2.83PCh. 2 - Prob. 2.84PCh. 2 - Prob. 2.85PCh. 2 - Prob. D2.86PCh. 2 - Prob. 2.87PCh. 2 - Prob. 2.88PCh. 2 - Prob. 2.89PCh. 2 - Prob. 2.90PCh. 2 - Prob. 2.91PCh. 2 - Prob. D2.92PCh. 2 - Prob. D2.93PCh. 2 - Prob. 2.94PCh. 2 - Prob. 2.95PCh. 2 - Prob. 2.96PCh. 2 - Prob. 2.97PCh. 2 - Prob. 2.98PCh. 2 - Prob. D2.99PCh. 2 - Prob. D2.100PCh. 2 - Prob. 2.101PCh. 2 - Prob. 2.102PCh. 2 - Prob. 2.103PCh. 2 - Prob. 2.104PCh. 2 - Prob. 2.105PCh. 2 - Prob. 2.106PCh. 2 - Prob. 2.107PCh. 2 - Prob. 2.108PCh. 2 - Prob. 2.109PCh. 2 - Prob. 2.110PCh. 2 - Prob. 2.111PCh. 2 - Prob. 2.112PCh. 2 - Prob. 2.113PCh. 2 - Prob. 2.114PCh. 2 - Prob. 2.115PCh. 2 - Prob. D2.116PCh. 2 - Prob. D2.117PCh. 2 - Prob. D2.118PCh. 2 - Prob. 2.119PCh. 2 - Prob. 2.120PCh. 2 - Prob. 2.121PCh. 2 - Prob. 2.122PCh. 2 - Prob. 2.123PCh. 2 - Prob. 2.124PCh. 2 - Prob. 2.125PCh. 2 - Prob. 2.126PCh. 2 - Prob. D2.127P
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- Q- 5. Assuming ideal op amps, find the voltage gain of each of the circuits. 100 k1 100 kl 100 kn 100 k 10 k 10 k) 10 kl 10 kn 10 k 10 k 10 kl Q- 6. Design a circuit using one ideal op amp whose output is [Hint: Use a structure similar to that shown below] R Rpa Rpe ...arrow_forward2. Consider the following difference amplifier circuit using an ideal op amp. Assume If R₁ = R₂ = 2ks and R₂ = R₁ = 200kn, R₂ R₁ U/10W R₁ U120 ww R₁ + Vo out to ground, and a love-frequ Let the op amp be ideal (a) Find the value of differential gain, Ad, in dB. What is the value of differential input resistance? -I, what is the maidmum possible value of 1 for which an (b) If the resistors have 1% tolerance (i.e., each can be within ±1% of its nominal value), find the worst-case common mode gain, Acm and the corresponding value of CMRR in dB.arrow_forwardFigure Q3 is an ideal Operational Amplifier circuit. a) What is the voltage vi at the negative side input terminal? b) Based on your analysis in 3(a), identify the value of i and the feedback impedance Z,. c) Identify the value of v, based on the deduction that Operational Amplifier in Figure Q3 is an ideal Op Amp.arrow_forward
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- Please show that gain = -(1-n)/(1+nA) , n = R1/(R1+R2) and compare to gain of ideal op amp. Calculate the input and output impedances, and lastly whats the point of the resistor R1//R2 on the non-inverting input? What would be the best value for this resistor? (pretending it wasn't given that the value is R1/R2).arrow_forwardQ5) For the circuit shown below, if the differential gain (Aa) of the op-amp is (50000) and the CMRR in (db) is (34). Find the output voltage (v_out). V_in1 = 10 mv V_out V_in2 = 1 mv O GND1arrow_forwardR, OV OUT + Complete the analysis showing that Vo/Vin = -Rf/Rin Let currents be defined as 1 equals the current flowing through Rin from left to right 12 equals the current flowing into the Opamp 13 equals the current flowing through the feedback resistor from left to right. Write the KCL equation in terms of 11, 12, and 13 at the inverting node of the Op-Amp. O There is no current flowing in the circuit O 12 = 11 + 13 O 11 = 12 + 13 11 + 12 = 13arrow_forward
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