Exam Details
| Subject | Linear Integrated Circuits | |
| Paper | ||
| Exam / Course | Diploma In Electronics And Communication Engineering (DECVI)/ Advanced Level Certificate Course In Electronics And Communication Engineering (ACEVI)/ | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2015 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct alternative.
The ratio of change in input offset voltage when variation in supply voltage is made is called
PSRR
CMRR
Transient response
Input offset voltage stability
The order of input resistance of IC-741C OP-AMPis
10^4 ohm
10^3 ohm
10^5 ohm
10^6 ohm
A triangle-wave oscillator consists of an OP-AMP comparator followed by a/an
Differentiator
Amplifier
Integrator
Multivibrator
Slew rate of an ideal OP-AMP is
1
0
infinity
None of these
IC-555 can be used as a/an
Differentiator
Integrator
Ramp-generator
Multivibrator
A notch filter is a
Wide BPF
Narrow BPF
Wide band reject filter
Narrow band reject filter
The output of an OP-AMP integrator is dV·1
-RfC1 dVi/dt
R1CF integral of Vi(t)dt
1/R1CF integral of Vi(t)dt
R1/CF integral of Vi(t)dt
Draw and explain the schematic block diagram of an OP-AMP.
What is a practical OP-AMP Draw its equivalent circuit diagram. Why is RE replaced by a constant current bias circuit in a differential OP-AMP?
What is the difference between open-loop gain and closed-loop gain of an OP-AMP Draw an OP-AMP circuit whose output is V1 V2 V3 V4 and explain its operation.
Draw and explain the operation of a practical integrator with necessary waveforms and derivation.
For the non-inverting amplifier of the given figure R1 1 kQ and Rr 10 kQ. Calculate the close-loop voltage gain of the amplifier and the feedback factor B.
<img src='./qimages/13305-4a.jpg'>
Draw the circuit of a voltage-to-current converter if the load is
Floating, and
Grounded.
Explain how a sawtooth waveform is generated.by using a sinusoidal waveform in the OP-AMP circuitry with necessary diagrams and waveforms.
How can Q-factor of an active filter be improved Draw and explain· the transfer characteristics of an all pass filter.
Draw and explain the operation of a second order Butterworth low pass active filter.
In an astable multivibrator, RA 6·8 kQ, RB 3·3 kQ and C 0·1 u.F. Calculate
tHIGH
tLOW
Free running frequency
Duty cycle.
The differential input OP-AMP shown in figure 2 consists of a base amplifier of infinite gain. Show that
Vout R2/R1(V2
<img src='./qimages/13305-7a.jpg'>
Write down the various applications of IC-565 (PLL). Explain anyone of these.
8. Explain any two of the following:
Bistable Multivibrator
Timer IC-555
Sample and Hold Circuit
The ratio of change in input offset voltage when variation in supply voltage is made is called
PSRR
CMRR
Transient response
Input offset voltage stability
The order of input resistance of IC-741C OP-AMPis
10^4 ohm
10^3 ohm
10^5 ohm
10^6 ohm
A triangle-wave oscillator consists of an OP-AMP comparator followed by a/an
Differentiator
Amplifier
Integrator
Multivibrator
Slew rate of an ideal OP-AMP is
1
0
infinity
None of these
IC-555 can be used as a/an
Differentiator
Integrator
Ramp-generator
Multivibrator
A notch filter is a
Wide BPF
Narrow BPF
Wide band reject filter
Narrow band reject filter
The output of an OP-AMP integrator is dV·1
-RfC1 dVi/dt
R1CF integral of Vi(t)dt
1/R1CF integral of Vi(t)dt
R1/CF integral of Vi(t)dt
Draw and explain the schematic block diagram of an OP-AMP.
What is a practical OP-AMP Draw its equivalent circuit diagram. Why is RE replaced by a constant current bias circuit in a differential OP-AMP?
What is the difference between open-loop gain and closed-loop gain of an OP-AMP Draw an OP-AMP circuit whose output is V1 V2 V3 V4 and explain its operation.
Draw and explain the operation of a practical integrator with necessary waveforms and derivation.
For the non-inverting amplifier of the given figure R1 1 kQ and Rr 10 kQ. Calculate the close-loop voltage gain of the amplifier and the feedback factor B.
<img src='./qimages/13305-4a.jpg'>
Draw the circuit of a voltage-to-current converter if the load is
Floating, and
Grounded.
Explain how a sawtooth waveform is generated.by using a sinusoidal waveform in the OP-AMP circuitry with necessary diagrams and waveforms.
How can Q-factor of an active filter be improved Draw and explain· the transfer characteristics of an all pass filter.
Draw and explain the operation of a second order Butterworth low pass active filter.
In an astable multivibrator, RA 6·8 kQ, RB 3·3 kQ and C 0·1 u.F. Calculate
tHIGH
tLOW
Free running frequency
Duty cycle.
The differential input OP-AMP shown in figure 2 consists of a base amplifier of infinite gain. Show that
Vout R2/R1(V2
<img src='./qimages/13305-7a.jpg'>
Write down the various applications of IC-565 (PLL). Explain anyone of these.
8. Explain any two of the following:
Bistable Multivibrator
Timer IC-555
Sample and Hold Circuit
Other Question Papers
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- Advance Microprocessor And Architecture
- Analog And Mixed Mode Vlsi Design
- Analog Communication
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- Analog Integrated Circuits Design
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