If the open loop gain of an op-amp is very large, does the closed loop gain depend upon the external components or th...
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If the open loop gain of an op-amp is very large, does the closed loop gain depend upon the external components or th...
Problem 4 : The op amp is ideal, if the closed - loop gain of the...
Problem 4
:
The
op amp is ideal, if the closed
-
loop gain of the
following circuit is G=v
0
/v
s
=
-
5
0
, calculate
the value of the unknown resistor R
x
.
Figure 4
Problem 4: The op amp is ideal, if the closed-loop gain of the following circuit is G-Vo/vis 50, calculate e value of the unknown resistor Rx 5 ΚΩ 50 KS2 2 ΚΩ Figure 4
2. The inverting OP-AMP shown in the figure has an open loop gain of 100. The...
2. The inverting OP-AMP shown in the figure has an open loop gain of 100. The closed loop gain VVs is R 10K R 1K GATEpaper.in a.8 b.-9 c.10
Q 1. An op amp with an open-loop gain of 6 x 105 and Vcc =...
Q 1. An op amp with an open-loop gain of 6 x 105 and Vcc = 10V has an output voltage of 3 V. If the voltage at the inverting input is -luV, what is the magnitude of the noninverting-input voltage? (5 points) Q2. The supply voltage of the op amp in the circuit of Figure 1 is 16 V. If R = 3kN, assign a resistance value to Rf so that the circuit would deliver 75 mW of power...
JU Oct 2017 5 Minute Test Your Understanding Quiz A compensated Op-Amp has an open-loop gain...
JU Oct 2017 5 Minute Test Your Understanding Quiz A compensated Op-Amp has an open-loop gain of 10' and a dominant pole of 8 Hz. The Op-Amp is used in a closed-loop single stage amplifier which has a low-frequency gain of 50. What is the -3 dB bandwidth of the closed-loop amplifier? Note: I know of at least two ways to solve this problem
Question 6: Sketch open-loop gain versus frequenen graph of a compensated op amp inci for high-frequency...
Question 6: Sketch open-loop gain versus frequenen graph of a compensated op amp inci for high-frequency operation. Label all axes and other details. A measurement of the open-loop gain at very low frequencies shows it to be 109 dB: at 100 kHz this shows it is 31 dB. Estimate the 3-dB frequency, its unity-gain frequency, and its de gain. (20 points) Question 7: For a Silicon diode Vp = 0.66 V and Ip = 1.0 mA. If Vris 25 mV,...
Find closed loop gain and i0 he circuit 8.28. For Fig. 8.58, using ideal op-amp model,...
Find closed loop gain and i0
he circuit 8.28. For Fig. 8.58, using ideal op-amp model, cal- at choice Vinl to culate the closed-loop gain . Also find io when us 1.2V. 12 0 V2 + io 20 kQ + 2.5 k2 Vo 10 k Figure 8.58
he circuit 8.28. For Fig. 8.58, using ideal op-amp model, cal- at choice Vinl to culate the closed-loop gain . Also find io when us 1.2V. 12 0 V2 + io 20 kQ...
You have an otherwise ideal op-amp with an open-loop gain of 20. Design an inverting amplifier...
You have an otherwise ideal op-amp with an open-loop gain of 20. Design an inverting amplifier with this single op-amp so that it has a DC gain of -5 ±0.1. Also, please explain how this design works in words.
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is...
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is shown in the figure be for two different values of the external compensating capacitor, Ci.If provides unity-gain compensation, determine the capacitance the op-amp for a closed-loop gain of 3 dB. C-30 pF required to compensat Open Loop Frequency Response 120 100 80 40 20 -20 FREQUENCY(Hx) j) (2 marks) Describe how delay in the loop of any feedback control system can seriously compromise the...
Assume the op-amp below is used as a comparator circuit and that the op-amp is powered...
Assume the op-amp below is used as a comparator circuit and that
the op-amp is powered by a bipolar
+/- 15 V power supply. If the reference voltage Vref = -9 V and the
input voltage is VI = 12 V,
determine the output voltage, VO, of the op-amp. Assume the
open-loop gain, A, is very large and
consider saturation effects. Include units in your answer.
VCC Vi V. + + Vref EE
is the range of gain values expected from such a circuit? An inverting op amp circuit...
is the range of gain values
expected from such a circuit?
An inverting op amp circuit is fabricated with the resistors R, and R2 having x% tolerance (that is, the value of each resistance can deviate from the nominal value by as much as x%). What is the tolerance on the realized closed-loop gain? As- sume the op amp to be ideal. If the nominal closed-loop gain is -100 V/V and x = 5, what
Problem 4
:
The
op amp is ideal, if the closed
-
loop gain of the
following circuit is G=v
0
/v
s
=
-
5
0
, calculate
the value of the unknown resistor R
x
.
Figure 4
Problem 4: The op amp is ideal, if the closed-loop gain of the following circuit is G-Vo/vis 50, calculate e value of the unknown resistor Rx 5 ΚΩ 50 KS2 2 ΚΩ Figure 4
2. The inverting OP-AMP shown in the figure has an open loop gain of 100. The closed loop gain VVs is R 10K R 1K GATEpaper.in a.8 b.-9 c.10
Q 1. An op amp with an open-loop gain of 6 x 105 and Vcc = 10V has an output voltage of 3 V. If the voltage at the inverting input is -luV, what is the magnitude of the noninverting-input voltage? (5 points) Q2. The supply voltage of the op amp in the circuit of Figure 1 is 16 V. If R = 3kN, assign a resistance value to Rf so that the circuit would deliver 75 mW of power...
JU Oct 2017 5 Minute Test Your Understanding Quiz A compensated Op-Amp has an open-loop gain of 10' and a dominant pole of 8 Hz. The Op-Amp is used in a closed-loop single stage amplifier which has a low-frequency gain of 50. What is the -3 dB bandwidth of the closed-loop amplifier? Note: I know of at least two ways to solve this problem
Question 6: Sketch open-loop gain versus frequenen graph of a compensated op amp inci for high-frequency operation. Label all axes and other details. A measurement of the open-loop gain at very low frequencies shows it to be 109 dB: at 100 kHz this shows it is 31 dB. Estimate the 3-dB frequency, its unity-gain frequency, and its de gain. (20 points) Question 7: For a Silicon diode Vp = 0.66 V and Ip = 1.0 mA. If Vris 25 mV,...
Find closed loop gain and i0
he circuit 8.28. For Fig. 8.58, using ideal op-amp model, cal- at choice Vinl to culate the closed-loop gain . Also find io when us 1.2V. 12 0 V2 + io 20 kQ + 2.5 k2 Vo 10 k Figure 8.58
he circuit 8.28. For Fig. 8.58, using ideal op-amp model, cal- at choice Vinl to culate the closed-loop gain . Also find io when us 1.2V. 12 0 V2 + io 20 kQ...
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is shown in the figure be for two different values of the external compensating capacitor, Ci.If provides unity-gain compensation, determine the capacitance the op-amp for a closed-loop gain of 3 dB. C-30 pF required to compensat Open Loop Frequency Response 120 100 80 40 20 -20 FREQUENCY(Hx) j) (2 marks) Describe how delay in the loop of any feedback control system can seriously compromise the...
Assume the op-amp below is used as a comparator circuit and that
the op-amp is powered by a bipolar
+/- 15 V power supply. If the reference voltage Vref = -9 V and the
input voltage is VI = 12 V,
determine the output voltage, VO, of the op-amp. Assume the
open-loop gain, A, is very large and
consider saturation effects. Include units in your answer.
VCC Vi V. + + Vref EE
is the range of gain values
expected from such a circuit?
An inverting op amp circuit is fabricated with the resistors R, and R2 having x% tolerance (that is, the value of each resistance can deviate from the nominal value by as much as x%). What is the tolerance on the realized closed-loop gain? As- sume the op amp to be ideal. If the nominal closed-loop gain is -100 V/V and x = 5, what
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