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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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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- Assume that Op-Amp as shown above is ideal. Given that R1 is 0.29 Ohm, R2 is 1.7 Ohm, R3 is 2.03 Ohm, R4 is 2.125 Ohm. Calculate Vo?arrow_forwardFor an opamp, the CMRR is 75 dB. If the differential gain is 4000, then what will be the common mode gain?arrow_forwardA certain op-amp has two internal amplifier stages with the following gains and critical frequencies; Av1 = 50 dB, Av2 = 25 dB, fc1 = 1500 Hz, and fc2 = 3000 Hz. Determine the open loop midrange gain in decibels and total phase lag when f = fc1....arrow_forward
- The non-inverting and inverting inputs of an op-amp have an input voltage of 1.5 mV and 1.0 mV, respectively. If the op-amp has a common-mode voltage gain of 10 and a differential-mode gain of 10,000, what is its output voltage? A. 5.0 V B. 5.0125 mV C. 5.0125 V D. 25.0125 V Ans. C. 5.0125 Varrow_forward3S Which of the followinh statements are true about an op-amp? a.op-amps have very high input impedance b.all of the statements c.op-amps have very low output impedance d.op-amps are very high gain DC amplifiersarrow_forwardDesign a unity gain inverting summing amplifier that will output the sum of two input voltages. Use a feedback resistor of 1.5kΩ.arrow_forward
- Find the closed-loop transconductance, input resistance, and output resistance for the circuit as shown. Assume RI = 2.4kΩ, RL = 7.5kΩ, and R1 = 7.5 kΩ.arrow_forward3F roblem 1. (P1) Three op-amps are connected in cascade configuration. An 80 microVolts signal is connected to the non-inverting input of the first op-amp. Both the 2nd and 3rd op-amps operates as inverting amplifiers. All feedback resistors are 420 KOhms while the input resistances are 71.4kOhms, 19.1kOhms, and 14KOhms respectively. Determine the output voltage of the first stage stage. a.12 V b.-1200 mV c.-1.2 V d.1.2 mVarrow_forwardWhich of the following characteristics indicates a practical amplifier design in terms of input impedance? a.Low Zi b.High Zi c.Negative Zi d.Zero Ziarrow_forward
- A gain of 10 is required from a noninverting constant-multiplier op-amp circuit. If the input resistor is 9 k Ω, what should be the value of the feedback resistor? Rf=_____kohmsarrow_forwardUsing any number of Op-Amps, design multistage amplifier to amplify input Ac signal with 0.01V amplitude, the expected output voltage would have 4V amplitude. The input signal frequency = 10 KHz. Assume gain bandwidth product of Op-Amp = 1 MHzarrow_forwardWhat is the value of Rf in ohms if we want a gain of -125 for an inverting amp which has an R1=4000 ohms? *Answer should be numeric and w/o commaarrow_forward
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