Code No: NR310404
NR
Set No. 2
in
III B.Tech I Semester Examinations,May 2011 LINEAR AND DIGITAL IC APPLICATIONS Common to MECT, ETM, E.CONT.E, EIE, ECE Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) When do we prefer H.T.L. (High-Threshold Logic) gate? And explain why? [4]
ld .
(b) Draw the Integrated circuit of H.T.L. 3-input NAND gate, and explain its operation with the help of Truth Table. [10] (c) Find out the average power dissipation of the gate.
[2]
2. (a) What feedback is preferred for oscillators and why? What is the effect of negative feedback? [8]
or
(b) Design an OP-AMP based relaxation oscillator and derive the frequency of oscillation. [8]
3. (a) List out different types of A/D converters and compare their merits and demerits. [8]
uW
(b) Give the schematic circuit of an A/D converter widely used in digital voltmeters and explain its operation. Derive expression for output voltage. [8] 4. (a) Explain the design procedure (with suitable circuit diagram of a fourth order Butterworth low-pass filter). [10]
nt
(b) A certain narrow band-pass filter has been designed to meet the following specifications: fC =2kHz. Q=20, and Ap =10. What modifications are necessary in the filter circuit to change the center frequency ‘fc ’ to 1kHz, keeping the gain and band-width constant? [6] 5. Explain the use of 555 timer as free running ramp generator and draw the output waveforms. [16]
Aj
6. (a) Define the terms : SVRR,CMRR, input bias current, input offset voltage, Gain Bandwidth product [10] (b) What are the differences between the inverting and non inverting terminals? What do you mean by the term “virtual ground”? [6]
7. (a) Which circuit is more preferable as an analog phase detector. Draw the circuit and explain its working. Derive expression for output voltage, if both the input signals are square waves with a phase difference of ’Φ’. [8] (b) Draw the internal circuit diagram and pin diagram (DIP) of 566 VCO. Explain its operation and derive expression for output frequency fo . [8]
1
Code No: NR310404
NR
Set No. 2
8. (a) Explain how multiplier can be used to modulate and demodulate an AM signal [8] (b) Discuss the differences between the differential amplifiers used in the first two stages of opamp. [8]
Aj
nt
uW
or
ld .
in
?????
2
Code No: NR310404
NR
Set No. 4
in
III B.Tech I Semester Examinations,May 2011 LINEAR AND DIGITAL IC APPLICATIONS Common to MECT, ETM, E.CONT.E, EIE, ECE Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) List out different types of A/D converters and compare their merits and demerits. [8]
ld .
(b) Give the schematic circuit of an A/D converter widely used in digital voltmeters and explain its operation. Derive expression for output voltage. [8]
2. (a) Explain how multiplier can be used to modulate and demodulate an AM signal [8]
or
(b) Discuss the differences between the differential amplifiers used in the first two stages of opamp. [8]
3. (a) When do we prefer H.T.L. (High-Threshold Logic) gate? And explain why? [4]
uW
(b) Draw the Integrated circuit of H.T.L. 3-input NAND gate, and explain its operation with the help of Truth Table. [10] (c) Find out the average power dissipation of the gate.
[2]
4. (a) Explain the design procedure (with suitable circuit diagram of a fourth order Butterworth low-pass filter). [10]
nt
(b) A certain narrow band-pass filter has been designed to meet the following specifications: fC =2kHz. Q=20, and Ap =10. What modifications are necessary in the filter circuit to change the center frequency ‘fc ’ to 1kHz, keeping the gain and band-width constant? [6] 5. (a) Define the terms : SVRR,CMRR, input bias current, input offset voltage, Gain Bandwidth product [10]
Aj
(b) What are the differences between the inverting and non inverting terminals? What do you mean by the term “virtual ground”? [6]
6. (a) Which circuit is more preferable as an analog phase detector. Draw the circuit and explain its working. Derive expression for output voltage, if both the input signals are square waves with a phase difference of ’Φ’. [8] (b) Draw the internal circuit diagram and pin diagram (DIP) of 566 VCO. Explain its operation and derive expression for output frequency fo . [8]
7. Explain the use of 555 timer as free running ramp generator and draw the output waveforms. [16]
3
Code No: NR310404
NR
Set No. 4
8. (a) What feedback is preferred for oscillators and why? What is the effect of negative feedback? [8] (b) Design an OP-AMP based relaxation oscillator and derive the frequency of oscillation. [8]
Aj
nt
uW
or
ld .
in
?????
4
Code No: NR310404
NR
Set No. 1
in
III B.Tech I Semester Examinations,May 2011 LINEAR AND DIGITAL IC APPLICATIONS Common to MECT, ETM, E.CONT.E, EIE, ECE Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Explain the design procedure (with suitable circuit diagram of a fourth order Butterworth low-pass filter). [10]
ld .
(b) A certain narrow band-pass filter has been designed to meet the following specifications: fC =2kHz. Q=20, and Ap =10. What modifications are necessary in the filter circuit to change the center frequency ‘fc ’ to 1kHz, keeping the gain and band-width constant? [6] 2. (a) When do we prefer H.T.L. (High-Threshold Logic) gate? And explain why? [4]
or
(b) Draw the Integrated circuit of H.T.L. 3-input NAND gate, and explain its operation with the help of Truth Table. [10] (c) Find out the average power dissipation of the gate.
[2]
uW
3. (a) Explain how multiplier can be used to modulate and demodulate an AM signal [8] (b) Discuss the differences between the differential amplifiers used in the first two stages of opamp. [8] 4. (a) What feedback is preferred for oscillators and why? What is the effect of negative feedback? [8] (b) Design an OP-AMP based relaxation oscillator and derive the frequency of oscillation. [8]
nt
5. (a) List out different types of A/D converters and compare their merits and demerits. [8] (b) Give the schematic circuit of an A/D converter widely used in digital voltmeters and explain its operation. Derive expression for output voltage. [8]
Aj
6. (a) Define the terms : SVRR,CMRR, input bias current, input offset voltage, Gain Bandwidth product [10] (b) What are the differences between the inverting and non inverting terminals? What do you mean by the term “virtual ground”? [6]
7. Explain the use of 555 timer as free running ramp generator and draw the output waveforms. [16] 8. (a) Which circuit is more preferable as an analog phase detector. Draw the circuit and explain its working. Derive expression for output voltage, if both the input signals are square waves with a phase difference of ’Φ’. [8] 5
Code No: NR310404
NR
Set No. 1
(b) Draw the internal circuit diagram and pin diagram (DIP) of 566 VCO. Explain its operation and derive expression for output frequency fo . [8]
Aj
nt
uW
or
ld .
in
?????
6
Code No: NR310404
NR
Set No. 3
in
III B.Tech I Semester Examinations,May 2011 LINEAR AND DIGITAL IC APPLICATIONS Common to MECT, ETM, E.CONT.E, EIE, ECE Time: 3 hours Max Marks: 80 Answer any FIVE Questions All Questions carry equal marks ????? 1. (a) Explain how multiplier can be used to modulate and demodulate an AM signal [8]
ld .
(b) Discuss the differences between the differential amplifiers used in the first two stages of opamp. [8]
2. (a) When do we prefer H.T.L. (High-Threshold Logic) gate? And explain why? [4]
or
(b) Draw the Integrated circuit of H.T.L. 3-input NAND gate, and explain its operation with the help of Truth Table. [10] (c) Find out the average power dissipation of the gate.
[2]
uW
3. (a) Which circuit is more preferable as an analog phase detector. Draw the circuit and explain its working. Derive expression for output voltage, if both the input signals are square waves with a phase difference of ’Φ’. [8] (b) Draw the internal circuit diagram and pin diagram (DIP) of 566 VCO. Explain its operation and derive expression for output frequency fo . [8] 4. (a) List out different types of A/D converters and compare their merits and demerits. [8] (b) Give the schematic circuit of an A/D converter widely used in digital voltmeters and explain its operation. Derive expression for output voltage. [8]
nt
5. (a) Define the terms : SVRR,CMRR, input bias current, input offset voltage, Gain Bandwidth product [10] (b) What are the differences between the inverting and non inverting terminals? What do you mean by the term “virtual ground”? [6]
Aj
6. Explain the use of 555 timer as free running ramp generator and draw the output waveforms. [16] 7. (a) What feedback is preferred for oscillators and why? What is the effect of negative feedback? [8] (b) Design an OP-AMP based relaxation oscillator and derive the frequency of oscillation. [8]
8. (a) Explain the design procedure (with suitable circuit diagram of a fourth order Butterworth low-pass filter). [10] 7
Code No: NR310404
NR
Set No. 3
(b) A certain narrow band-pass filter has been designed to meet the following specifications: fC =2kHz. Q=20, and Ap =10. What modifications are necessary in the filter circuit to change the center frequency ‘fc ’ to 1kHz, keeping the gain and band-width constant? [6]
Aj
nt
uW
or
ld .
in
?????
8
