Electronics Fundamentals: Circuits, Devices & Applications
8th Edition
ISBN: 9780135072950
Author: Thomas L. Floyd, David Buchla
Publisher: Prentice Hall
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Textbook Question
Chapter 18, Problem 12P
The open-loop gain of a certain op-amp is 175,000. Its common-mode gain is 0.18. Determine the CMRR in decibels.
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5. The open-loop gain of a certain op-amp is 175,000. Its common-mode gain is 0.18. Determine
the CMRR in decibels.
For a given op amp, CMRR =
differential gain = 108. What is the
common mode gain of Op-Amp.
A
B
C
1
10
100
107 and
D 0.1
4. Determine the voltage gain of the non-inverting op-amp with Rf-100k and
R1=4.7k02. Calculate the output voltage if the input voltage is 200mV
Chapter 18 Solutions
Electronics Fundamentals: Circuits, Devices & Applications
Ch. 18 - When a diff-amp has identical signals on both...Ch. 18 - A high CMRR for a diff-amp means the common-mode...Ch. 18 - Prob. 3TFQCh. 18 - The open-loop voltage gain of an op-amp is also...Ch. 18 - Prob. 5TFQCh. 18 - Prob. 6TFQCh. 18 - In a voltage-follower, the open-loop and...Ch. 18 - Prob. 8TFQCh. 18 - Prob. 9TFQCh. 18 - If the feedback resistor in an amplifier is open,...
Ch. 18 - Which characteristic docs not necessarily apply to...Ch. 18 - In selecting an op-amp. suppose you have several...Ch. 18 - Prob. 3STCh. 18 - Prob. 4STCh. 18 - Prob. 5STCh. 18 - Prob. 6STCh. 18 - Prob. 7STCh. 18 - Prob. 8STCh. 18 - If you know an op-amp's open-loop gain and nothing...Ch. 18 - Prob. 10STCh. 18 - Prob. 11STCh. 18 - The highest possible input resistance is achieved...Ch. 18 - Compare a practical op-amp to an ideal op-amp.Ch. 18 - Two IC op-amps are available to you. Their...Ch. 18 - Identify the type of input and output...Ch. 18 - Prob. 4PCh. 18 - A certain diff-amp has a differential gain of 60...Ch. 18 - A certain diff-amp has a CMRR of 65 dB. If the...Ch. 18 - Identify the type of input mode for each op-amp in...Ch. 18 - Show the common-mode input in Figure 18-37 in an...Ch. 18 - Determine the bias current, IBIAS, given that the...Ch. 18 - Distinguish between input bias current and input...Ch. 18 - A certain op-amp has a CMRR of 250,000. Convert...Ch. 18 - The open-loop gain of a certain op-amp is 175,000....Ch. 18 - The op-amp data sheet specifies a CMRR of 300,000...Ch. 18 - Figure 18-38 shows the output voltage of an op-amp...Ch. 18 - How long does it take the output voltage of an...Ch. 18 - Identify each of the op-amp configurations in...Ch. 18 - For the amplifier in Figure 18-40. determine the...Ch. 18 - Determine the closed-loop gain of each amplifier...Ch. 18 - Find the value of Rf that will produce the...Ch. 18 - Find the gain of each in amplifier in Figure...Ch. 18 - If a signal voltage of 10 mV applied to each...Ch. 18 - Determine the approximate values for each of the...Ch. 18 - Determine the input and output resistances for...Ch. 18 - Repeat Problem 23 for each circuit in Figure...Ch. 18 - Repeat Problem 23 for each circuit in Figure...Ch. 18 - Prob. 26PCh. 18 - Prob. 28PCh. 18 - Prob. 29PCh. 18 - Prob. 30PCh. 18 - Prob. 31PCh. 18 - Prob. 32P
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- A certain diff-amp has a differential voltage gain of 2000 and a common-mode gain of 0.2. Determine the CMRR and express it in decibels.arrow_forwardFor a given opamp circuit, the value of CMRR is 40 dB. If the differential gain is Ad=105, then what will be the value of the common mode gain Ac?arrow_forwardİf we have inverting op-amp, find the value of Vin, Iin, I1 and If. Assume R1 = 10 K, Rin = Rf = 1M, Av=250000 and Vo= -5 Varrow_forward
- 1. Determine the CMRR and express it in decibels for an amplifier with a differential voltage of 8500 and a common-mode gain of 0.25. 2. Determine the CMRR and express it in dB for an op-amp with an open-loop differential voltage gain of 85,000 and a common-mode gain of 0.25. 3. When a pulse is applied to an op-amp, the output voltage goes from -8 V to +7 V in 0.75 µs. What is the slew rate? 4. Differentiate the working principle of differential and operational amplifier and its operation. Discuss your answer in at least 5 sentences.arrow_forward3ZF The typical value of the out impedance of an op-amp is a.between 100 Ohms to little less than 1 KOhms b.less than 100 Ohms c.at least 10 percent of the input impedance d.equivalent to short circuitarrow_forwardThe gain of the instrumentation amplifier IA is 800. Determine the gain of the circuit V. / VIN? Select one: 30 k2 O a. 160.0 Ob. 0.0 E IA Oc. 0.2 Od. 800.0 20 k2 80 kL Oe.arrow_forward
- Negative feedback added to an op-amp it decreases the bandwidth and decreases the gain. Select one: O True O Falsearrow_forwardProblem C It is desired to have a gain of 20 for frequencies up to 180 kHz. Determine the minimum unity gain frequency specification for the op amp. The gain should be within at least 98% Vsig Rin + Rf Vcc/-Vcc +12v/ -12V Voutarrow_forwardFind the transfer function for the follasug op-amp arevit. (Var Niw) Vin Vautarrow_forward
- If we have inverting op-amp, find the value of Vin, lin, 1 and If. Assume R1 = 10 K, Rin = %3D Rf = 1M, Av=250000 and Vo= -5 Varrow_forwardThe datasheet of an Op-Amp gives AoL = 150,000 and CMRR = 85 dB. What is the common-mode voltage gain? Show the details of your work.arrow_forward8. If the CMRR of a practical op-amp is 108 dB and the common mode gain is 0.4, the open loop gain is: a) 100000 b) 200000 c) 400000 d) 500000arrow_forward
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Current feedback amplifiers - Overview and compensation techniques; Author: Texas Instruments;https://www.youtube.com/watch?v=2WZotqHiaq8;License: Standard Youtube License