LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
B.Sc. DEGREE EXAMINATION – PHYSICS
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FIFTH SEMESTER – APRIL 2008
PH 5401 – ELECTRONICS – II
Date : 06/05/2008 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART A
Answer all the questions (10 x 2 = 20 marks)
- Give two characteristics of ideal op-amp
- What are hybrid integrated circuits?
- What is the advantage of R-2R ladder over weighted resistor D/A converter?
- Draw the circuit of a non-inverting amplifier
- What is virtual ground?
- What are the limitations of IC?
- What is the difference between SSI and VLSI chips?
- Distinguish between the instructions SUB B and CMP B
- What is the function of program counter?
- When will the auxiliary carry flag be set
PART B (4 x 7.5 = 30 marks)
Answer any four questions
- Explain the construction of differentiator and integrator using op-amp
- With a neat diagram explain A/D conversion using voltage to frequency converter
- Explain the fabrication of monolithic IC
- Write an assembly language program for picking largest number in an array
- Explain memory write with bus timing diagram
PART C
Answer any four questions (4 x 12.5 = 50 marks)
- Explain the construction and theory of logarithmic amplifier
- Explain a) parallel A/D converter (6)
- b) weighted resistor D/A converter
- a) Compare bipolar and MOS technology (6)
- b) Explain the IC fabrication of diode (6.5)
- Write the assembly language program for
- Multiplying two eight bit numbers
- Square root of a perfect square
- Explain the architecture of 8085 microprocessor
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