SRM IST a) Gain > ∞ b) Gain –>1 c) Gain <1 d) Gain -->∞
RAMAPURAM CAMPUS 6. Drift is the change in the output voltage for a change in the
DEPARTMENT OF ELECTRICAL AND ELECTRONICS a) frequency b) time c) temperature d) input voltage.
ENGINEERING
7. An output that is proportional to the addition of two or
CYCLE TEST 1 Date : more inputs is
Sub. Code :15EC204J Max. Marks : 50 a. differentiator b. summing amplifier
Sub. Name : LINEAR c integrator d. none of the above
INTEGRATED CIRCUITS 8. The ideal opamp is a
Duration : 90 MIN
a) voltage amplifier b) current amplifier
HOURS
Year / SEM : II/ IV c) transresistance amplifier d) transconductance
9. The first stage of 741 opamp is
PART A ( 10 x 1 = 10 Marks) a) voltage amplifier b) current amplifier
c) difference amplifier d) gain stage
1. Which of the following electrical characteristics is not 10. CMRR of ideal opamp is
exhibited by an ideal op-amp? a) 100 db b) 10 db c) 20 db d) infinity
a) Infinite voltage gain b) Infinite bandwidth
c) Infinite output resistance d) Infinite slew rat PART B (ANSWER ANY 4)(4*4=16)
2. How will be the output voltage obtained for an ideal op-
amp? 11. Write the ideal characteristics of opamp and explain shortly
a) Amplifies the difference between the two input voltages 12. Design an op amp for a gain value of 10 with resistor of
b) Amplifies individual voltages input voltages value 20kΩ in a circuit.
c) Amplifies products of two input voltage 13. Draw the circuit and frequency response of an opamp for
d) None of the mentioned dominant pole compensation
14. Calculate the output voltage of opamp if the input voltages
3. Find the input voltage of an ideal op-amp. It’s one of the are 12.5V and 13.9V with gain A = 200,000.
inputs and output voltages are 2v and 12v. (Gain=3) 15. Explain drift in opamp.
a) 8v b) 4v c) -4v d) -2v 16. What is the purpose of AC analysis of opamp.
4. The average value of bias currents at the input
terminals of the opamp is called as PART C (Answer All The Questions)
a.input offset voltage b. input offset current. 17. What is the necessity of frequency compensation and
c. input bias current. d. input bias voltage explain dominant pole and pole – zero compensation
OR
5. What is the gain of voltage follower? 18. Draw the complete block diagram of opamp and
explain the need for each stage.
19. Perform the DC analysis of opamp.
OR
20.
ii. Write short notes on Difference Amplifier (4)
OR
1. b. Write short notes on following with suitable diagram
and explanation
i.Log & Antilog Amplifier (6)
ii. Multiplier (6)
