ANALOG ELECTRONICS PAPER 5

DOWNLOAD ELECTRONICS ENGINEERING PREVIOUS YEARS QUESTION PAPERS B.TECH PTU

ANALOG INTEGRATED CIRCUITS (B.Tech 4th Semester,2122)

NOTE:- This paper consist of Three Sections. Section A is compulsory. Do any Four questions from Section B and any two questions from Section C

Section-A Marks : 20

1(a) What is a cascade Amplifier ? Explain.
(b) Enumerate four differential amplifier configurations.
(c) List four basic building blocks of an opamp.
(d) What are the characteristics of an ideal opamp?
(e) What is a voltage transfer curve of an opamp?
(f) What is feedback? List two types of feedback.
(g) Explain why negative feedback is desired in Amplifiers?
(h) Define input offset voltage and explain why it exists in all opamp.
(i) Define thermal drift and how does it affect the opamp.
(j) Differentiate between Clippers and Clampers.

Section-B Marks:5 Each

2. Define a Filter. How are the filters classified and what are advantages of active filters over passive filters?
3. Draw and explain the circuit of 555 as Monostable multivibrator.
4. With suitable diagrams explain the circuit of D/A convertor.
5. Define the following terms
(a) CMRR
(b) Slew Rate
(c) Voltage Swing
(d) Common mode gain
(e) Virtual ground.
6. Draw the circutit nad find the output waveforms for square, triangular inputs waveforms.

Section-C Marks : 10 Each


7. An input current of 1mA drives the I to V convertor. What is the output voltage for each switch position
in the figure? R1 = 100ω, R2 = 1Kω R3 = 10Kω

8. (a) A 100 pF capacitor has a maximum charging of 150 uA. What is Slew rate ?
(b) If a differential amplifier has CMRR of 80 dB and differential voltage gain of 200, how much output
voltage, will you get with a common mode input voltage of 10 mV ?
9. Write short notes on any two of the following:
(a) Logarithmic Amplifiers
(b) Instrumentation Amplifiers
(c) A to D Convertors.