Exam Details
| Subject | Linear Integrated Circuits | |
| Paper | ||
| Exam / Course | BTCVI / BTECVI / BTELVI | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
1. Give the circuit diagram of a CASCODE AMPLIFIER (CE-CB configuration). Explain its operation by carrying out its DC Analysis and AC Analysis.
Give the block diagram representation of a typical op-amp and also enlist the functions performed by each individual stage.
What are the different arrangements for obtaining positive and negative supply voltages for an op-amp
3. Explain the frequency response of an internally compensated and non-compensated op-amp.
4. Define the term slew rate of an op-amp and derive the slew rate equation. An inverting amplifier using 741C has a flat response upto 40 kHz. The gain of the amplifier is 10. What maximum peak-to-peak input signal can be applied without distorting the output?
Prove that for an inverting amplifier, the compensation resistor (Rcomp) placed at the non-inverting terminal to compensate for bias current is given by the expression
Rcomp RFR1/R1RF
For the circuit shown in Figure determine the magnitude of the output voltage, Vo.
<img src='./qimages/15602-5b.jpg'>
Draw the circuit diagram of a voltage to current converter with
floating load
grounded load
show that output current is proportional to the input voltage.
i.e. iL a Vi
What is the function of a peak. detector circuit? Give its circuit diagram only.
7. What are active filters? List the advantages of active filter over passive filter. Prove that the circuit shown in Figure 2 is a first order high-pass filter.
<img src='./qimages/15602-7.jpg'>
8. For the circuit shown in Figure determine the nature of waveforms at Vo1 and Vo2. Also determine the expression for the frequency of the waveform obtained at Vo2
<img src='./qimages/15602-8.jpg'>
9. Explain the operation of a RC-phase shift oscillator with the help of a neatly labelled circuit diagram and also determine:
Condition for oscillations
Frequency of oscillations
10. Write the technical notes on any two of the following:
Absolute Value Detectors
Clippers and Clampers
Small-Signal Full-Wave Rectifiers
Zero-Crossing Detectors
Give the block diagram representation of a typical op-amp and also enlist the functions performed by each individual stage.
What are the different arrangements for obtaining positive and negative supply voltages for an op-amp
3. Explain the frequency response of an internally compensated and non-compensated op-amp.
4. Define the term slew rate of an op-amp and derive the slew rate equation. An inverting amplifier using 741C has a flat response upto 40 kHz. The gain of the amplifier is 10. What maximum peak-to-peak input signal can be applied without distorting the output?
Prove that for an inverting amplifier, the compensation resistor (Rcomp) placed at the non-inverting terminal to compensate for bias current is given by the expression
Rcomp RFR1/R1RF
For the circuit shown in Figure determine the magnitude of the output voltage, Vo.
<img src='./qimages/15602-5b.jpg'>
Draw the circuit diagram of a voltage to current converter with
floating load
grounded load
show that output current is proportional to the input voltage.
i.e. iL a Vi
What is the function of a peak. detector circuit? Give its circuit diagram only.
7. What are active filters? List the advantages of active filter over passive filter. Prove that the circuit shown in Figure 2 is a first order high-pass filter.
<img src='./qimages/15602-7.jpg'>
8. For the circuit shown in Figure determine the nature of waveforms at Vo1 and Vo2. Also determine the expression for the frequency of the waveform obtained at Vo2
<img src='./qimages/15602-8.jpg'>
9. Explain the operation of a RC-phase shift oscillator with the help of a neatly labelled circuit diagram and also determine:
Condition for oscillations
Frequency of oscillations
10. Write the technical notes on any two of the following:
Absolute Value Detectors
Clippers and Clampers
Small-Signal Full-Wave Rectifiers
Zero-Crossing Detectors
Other Question Papers
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