The parameters of the op-amp in the circuit shown in Figure
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Microelectronics: Circuit Analysis and Design
- In the voltage regulator circuit shown in the figure, the op-amp is ideal. The BJT has VBE=0.7 V and Beta = 100, and the Zener voltage is 4.7 V. For a regulated output of 9 V, the value of R (in Ohms) is Express answers in two decimal points. Show solution on your answer sheet. V = 12 V Vo = 12 V 1 k2 1 k2 AV2 = 47 V %3D wwarrow_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_forward1- Mention any bwc advantages of integrated Circut. 2- For the circuit given below Vnis a sine wave Vinpp 11 Vand Vref-12V, Assume Vsat 1zv Name the circuit and drew the input and output waveforms. Vo Vin Vref 3- Explain why open-oop op-amp configurztions are not ues in linear applications Draw the biock diagram of opemp and define the funcion of each biockarrow_forward
- a square wave. stion 9 vet ered It is the average of the two dc currents that flows into the inverting and non- inverting inputs of an op-amp. d out of OInput Bias Current question O Input Offset Current O Quiescent Operating Current O Feedback Current For the op-amp circuit below, which of the following statements is true? Let Ad = 100,000 and + Vsat = + 5 V. %3D of +6 V on 99- hp 近arrow_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_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_forward
- 3ZF 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_forwardAn op-amp has a differential voltage gain of 2000 and a CMRR of 20000. A single-ended input signal of 250 µVrms is applied and a 0.5Vrms, 50 Hz common-mode noise signal appears on both inputs from the ac power line. Calculate the output voltage. ... A 0.5 Vrms B) 0.7 Vrms c) 0.75 Vrms D) 1.5 Vrmsarrow_forward1. A certain op-amp has an open-loop gain of 80,000. The maximum saturated output levels of this particular device are +12 V when the de supply voltages are +15 V. If a differential voltage of 0.15 mV rms is applied between the inputs, what is the peak-to-peak value of the output?arrow_forward
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