AU Solved Paper - set 6

AU Solved Paper [71766]

May - 2017

Linear Integrated Circuits and Applications

Semester - III (EEE)

Regulation 2013

 

Time : Three Hours]     [Maximum Marks : 100

Answer ALL questions.

PART A - (10 × 2 = 20 Marks)

 

Q.1 State the advantages of CMOS circuits.

(Refer Two Marks Q.63 of Chapter - 1)

Q.2 What is lithography ?

(Refer Two Marks Q.29 of Chapter - 1)

Q.3 Draw the circuit diagram of a symmetrical emitter coupled differential amplifier.

(Refer Two Marks Q.80 of Chapter - 2)

Q.4 For the circuit diagram shown below determine the output voltage V₀.

(Refer Two Marks Q.81 of Chapter - 2)

Q.5 Draw the circuit diagram of a zero cross detector with input and output waveforms.

(Refer Two Marks Q.124 of Chapter - 3)

Q.6 Which is the fastest ADC ? State reason.

(Refer Two Marks Q.110 of Chapter-3)

Q.7 What is an analog multiplier ? Name its applications.

(Refer Two Marks Q.26 of Chapter - 4)

Q.8 Define the circuit diagram of a PLL circuit used as an AM modulator.

(Refer section 4.5.5)

Q.9 Give one comparison for switching regulator and variable voltage regulator.

(Refer Two Marks Q.45 of Chapter - 5)

Q.10 How are frequency of triangular waveform, obtained using ICL 8038 function generator ?

(Refer Two Marks Q.46 of Chapter - 5)

 

PART B - (5 × 13 = 65 Marks)

Q.11 a) With neat illustrations explain the various steps involved in the IC fabrication process.

(Refer section 1.15)       [13]

OR

b) With circuit diagram explain the steps involved in the fabrication of the circuit shown below using IC technology.

(Refer section 1.15)       [13]

OR

b) With circuit diagram explain the steps involved in the fabrication of the circuit shown below using IC technology.

(Refer section 1.15)       [13]

Q.12 a) Determine the output voltage for the following circuits.        [13]

i)  (Refer example 2.22.1)      ii) (Refer example 2.27.1)

OR

b) i) With diagram explain the working principle of V/I converter.

(Refer section 2.25)       [5]

ii) Write a note on stability criterion and compensation techniques applicable to apamp circuit.

(Refer sections 2.31 and 2.33)         [8]

Q.13 a) With diagram explain the following applications of op amp.          [13]

i) Clippers and clampers (Refer sections 3.21 and 3.22)

ii) Triangular waveform generator. (Refer section 3.20)

OR

b) i) Explain the working principle of R-2R ladder type D/A converter.

(Refer section 3.25.2.3) [7]

ii) Design a second order Butterworth low pass filter with cut off frequency 2 kHz.

(Refer example 3.7.2)   [6]

Q.14 a) Briefly explain the functional block diagram of NE 565 PLL-IC to operate as a frequency divider.

(Refer sections 4.5.1      and 4.5.2)   [13]

OR

b) i) Explain the functional block diagram of 555 timer IC.

(Refer section 4.1.1)      [8]

ii) Design a monostable multivibrator with pulse duration of 1 msec using 555 timer IC.

 (Refer example 4.1.2)  [5]

Q.15 a) With necessary diagram and waveforms explain the working principle of switched mode power supply.

(Refer section 5.12)       [13]

OR

b) Write short notes on the following :

i) LM 380 power amplifier (Refer section 5.14)

ii) ICE 8038 function generator. (Refer section 5.15)    [13]

 

PART C - (1 × 15 = 15 Marks)

Q.16 a) Sketch the implementation of an instrumentation amplifier using three opamps. Explain the principle of operation and its applications.

(Refer sections 3.1.2 and 3.1.3)       [15]

OR

b) Using 7805 design a current source to deliver a 0.2 A current to a 22 Ohm 10 W load.

(Refer example 5.9.4)   [15]