MICROLEECTRONIC E BOOKS
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Author: SEDRA
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Chapter 2, Problem 2.26P
To determine
To show:The perfect compensation is achieved when
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For the op-amp shown in the following figure, if R1 = 100 2 and
Rf = 1 k2, the overall voltage gain is equal to ---------.
V₁
O a. -10
O b.-1
O c. 11
O d. 9
Rf
V₂
A noninverting amplifier is built with 0.01 percent precision resistors and designed with R2 = 99R1. What are the nominal and worst-case values of voltage gain if the op amp is ideal ? What open-loop gain is required for the op amp if the gain-error due to finite op amp gain is to be less than 0.01 percent?
Q1
Assume an op-amp is ideal, except for having a finite open-loop differential gain. Measurements
were made with the op amp in the open-loop mode .Determine the open-loop gain and complete
the Jable 1, which shows the results of those measurements.
Table 1
v1
-1 mV
v2
+1 mV
1V
+1 mV
1 V
1 V
5 V
-1 V
-1V
-0.5 V
-3 V
Chapter 2 Solutions
MICROLEECTRONIC E BOOKS
Ch. 2.1 - Prob. 2.1ECh. 2.2 - Prob. D2.4ECh. 2.2 - Prob. 2.5ECh. 2.2 - Prob. D2.8ECh. 2.3 - Prob. 2.10ECh. 2.3 - Prob. D2.11ECh. 2.3 - Prob. 2.12ECh. 2.3 - Prob. 2.13ECh. 2.3 - Prob. 2.14ECh. 2.4 - Prob. 2.15E
Ch. 2.4 - Prob. D2.16ECh. 2.4 - Prob. 2.17ECh. 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 - Prob. 2.1PCh. 2 - Prob. 2.2PCh. 2 - Prob. 2.3PCh. 2 - Prob. 2.4PCh. 2 - Prob. 2.7PCh. 2 - Prob. 2.8PCh. 2 - Prob. 2.10PCh. 2 - Prob. 2.11PCh. 2 - Prob. 2.12PCh. 2 - Prob. 2.16PCh. 2 - Prob. 2.17PCh. 2 - Prob. 2.19PCh. 2 - Prob. 2.23PCh. 2 - Prob. 2.24PCh. 2 - Prob. 2.25PCh. 2 - Prob. 2.26PCh. 2 - Prob. D2.27PCh. 2 - Prob. 2.28PCh. 2 - Prob. 2.32PCh. 2 - Prob. 2.33PCh. 2 - Prob. 2.34PCh. 2 - Prob. D2.35PCh. 2 - Prob. D2.36PCh. 2 - Prob. D2.37PCh. 2 - Prob. 2.39PCh. 2 - Prob. D2.42PCh. 2 - Prob. D2.43PCh. 2 - Prob. 2.44PCh. 2 - Prob. D2.46PCh. 2 - Prob. D2.47PCh. 2 - Prob. D2.48PCh. 2 - Prob. D2.49PCh. 2 - Prob. 2.50PCh. 2 - Prob. 2.51PCh. 2 - Prob. D2.53PCh. 2 - Prob. 2.54PCh. 2 - Prob. D2.59PCh. 2 - Prob. 2.60PCh. 2 - Prob. 2.65PCh. 2 - Prob. 2.66PCh. 2 - Prob. 2.67PCh. 2 - Prob. 2.68PCh. 2 - Prob. D2.69PCh. 2 - Prob. 2.70PCh. 2 - Prob. 2.76PCh. 2 - Prob. 2.77PCh. 2 - Prob. 2.80PCh. 2 - Prob. 2.81PCh. 2 - Prob. 2.89PCh. 2 - Prob. D2.92PCh. 2 - Prob. D2.93PCh. 2 - Prob. 2.94PCh. 2 - Prob. D2.99PCh. 2 - Prob. 2.104PCh. 2 - Prob. 2.106PCh. 2 - Prob. 2.114PCh. 2 - Prob. D2.117PCh. 2 - Prob. 2.119PCh. 2 - Prob. 2.121PCh. 2 - Prob. 2.123PCh. 2 - Prob. 2.124PCh. 2 - Prob. 2.126PCh. 2 - Prob. D2.127P
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- An inverting op amp has Rf= 500kohm and R1= 5kohm. Determine the op amp circuit voltage gain, input resistance and output resistance. Also Determine the output voltage and input current if the input voltage is 0.1 V. Assume op amp to be ideal one.arrow_forwardDerive the voltage gain of the circuit given, assuming it is an Ideal Op- Amp. If R1=2k, R2=10K2 and R3=10 KQ, find the input voltage when the output is 10 V Vin Vo R1 R2 R3 CamScannerarrow_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_forward
- 0.3/(5) Marks Derive the closed loop gain of the op-amp circuit illustrated in figure below. Then find the gain when R₁ 10 ΚΩ, R2 5kn, and R3: 15ΚΩ. = = = Vs R₁ R2 R3arrow_forwardOne of the most common applications of the op-amp is the inverting amplifier. The output is inverted relative to the input and the amplification gain is determined by the ratio of the feedback resistor (R2) to the input resistor (R1). 1. Analytically determine the "gain" of the inverting amplifier shown in Figure 2 (not including Capacitor C1). C1 1 nF R2 10 kQ Vss R1 Vdd Vin 1 ko Vout OA1 V2 V3 TLO81 5 V -5 V V1 ^) sine 1 kHz Vssarrow_forward2. You are given an op-amp with fr = 1 M Hz and told that the open-loop gain follows the standard 20 dB/decade fall off. You use this op-amp to build a "times one hundred" inverting amplifier. (a) Sketch the circuit to carry out this amplification and show the values of any external components that you will use. (b) What are the input, Zin, and output, Zout, impedances of your circuit? (c) At what frequency will the gain of your amplifier circuit hit the open-loop gain of the op-amp?arrow_forward
- 4. PD FB IN- 1 2 3 IN+ 4 8 VS+ 7 6 5 OUT NC VS- Using the Op-Amp diagram shown above, draw a line to create: 4.a. non-inverting amplifier 4.b. Inverting amplifierarrow_forwarda. Assume that the op-amp is ideal except for an input offset voltage of 7 mV. What is the output voltage if the input is zeroed out? b. Op-amp parameters are ideal except for the open loop gain which is 950. Derive an expression for the output in terms of the input. What is the difference between (b) and if the op-amp was ideal? C. VI 1K www 1K M" + 5K 5K www +₁ 1K Voarrow_forwardFor the op amp circuit given below, the op amp has an open-loop gain of 80000, an input resistance of 9 kQ, and an output resistance of 140 Q. Find the voltage gain vo/v using the nonideal model of the op amp. Vo The voltage gain vo/v of the op amp is esarrow_forward
- For an ideal op-amp, the open loop gain (Ay) → ∞o implies that linear applications that must employ -ve feedback around the op-amp. forarrow_forward1) Op-amp limiting factors - Current Saturation U2 Vin R1 OUT OPAMP R2 RLoad The saturation output current for the above op-amp is +/- 15mA. For the following input signals, determine if the output appears as would be expected in an ideal circuit. Include sketches of the output voltage. a) R1 = 100, R2 = 900, an open circuit load, and Vin is 2Vpp triangle wave with zero offset voltage (Vmax 1V, Vmin = -1V) and a period of 2ms. b) R1 = 100, R2 = 900, a 1k load, and Vin is 2Vpp triangle wave with a 1V offset voltage (Vmax=2V, Vmin = 0V) and a period of 2ms. c) R1 = 100, R2 = 900, an open circuit load, and Vin is 4Vpp triangle wave with zero offset voltage (Vmax=2V, Vmin = -2V) and a period of 2ms.arrow_forward8. The inverting amplifier has a gain of -10. Assume that = Vin 1.0 V. The approximate value of the voltage at the inverting terminal of the op-amp is a. 0 V b. 100 mV c. 1.0 V d. 10 V Vin w 1.0 kQ www 10kQ2 -o Vortarrow_forward
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