Cc D192032 Pages:2

Reg No.:_ Name:
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
FOURTH SEMESTER B.TECH DEGREE EXAMINATION(S), DECEMBER 2019
Course Code: EC204
Course Name: ANALOG INTEGRATED CIRCUITS
Max. Marks: 100 Duration: 3 Hours

PARTA
Answer any two full questions, each carries 15 marks. Marks
1 a) With the help of a circuit diagram explain the working of a differential amplifier if (4)
the following inputs are applied (i) ۷۸۰۱۷, ७७०८1 ५ (11) ആ, Vb2=1V (111)
५७७८-1४, ४७०८1 ४
b) List out the ideal characteristics of an op.amp. (3)

c) Design the circuits to obtain the following output, Vo. (i) ‏حملا‎ (67/0 (8)

(ii) Vo= Vit 20. (iii)Vo = — ಜೋ (iv) Vo= - 2Vi- ഡേ
2 a) For a differential amplifier, find the value of भव to cause 182= 0.981 where via= (4)

Vpi- Vp2 and 115 the tail current.
b) Draw the block diagram and equivalent circuit of an operational amplifier. (3)
c) With the help of a neat circuit diagram, derive the equation for the output voltage (8)
of an Instrumentation amplifier.

3 a) With the help of a circuit diagram, derive the equation for Input differential (4)

resistance of a differential amplifier.
b) Explain the openloop configurations and voltage transfer curve of anidealopamp. (3)
c) Explain the following properties of a practical opamp (1) Bandwidth (ii) Slew rate (8)
(111) Input offset voltage (iv) Input offset current
PART ‏تا‎
‎Answer any two full questions, each carries 15 marks.

4 a) With the help of circuit diagram and relevant equations, explain the disadvantages (4)
of a differentiator. How are the disadvantages removed in 8 practical
differentiator?

b) With the help of circuit diagrams and graphs, explain the working of a Full wave (3)
Precision rectifier.
©) Design a Schmitt Trigger with hysteresis width, Vy= 2V. Assume + Veu=+ ۰ (4)

d) Design a second order Butterworth Low Pass Filter with fy= 2KHz (4)

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