Design with Linear Integrated Circuits - Dec 2014

Electronics Engineering (Semester 5)

TOTAL MARKS: 80
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any three from the remaining questions.
(3) Assume data if required.
(4) Figures to the right indicate full marks. 1 (a) Design Inverting op-amp circuit for voltage gain 10. What care should be taken to operate it linearly.(4 marks) 1 (b) Design a differentiator to differentiate the input signal that varies in frequency from 10 Hz to 1 KHz.(4 marks) 1 (c) Compare zero crossing detector with Schmitt trigger circuit.(4 marks) 1 (d) What are the specifications of DAC?(4 marks) 1 (e) Design a circuit to keep LED 'ON' for 20 seconds once circuit is triggered.(4 marks) 2 (a) Define the following.
i) Slew rate
ii) CMRR
iii) Input offset voltage
iv) output offset voltage
v) PSRR(10 marks) 2 (b) Draw neat diagram of Instrumentation Amplifier using op-amp and hence derive the equation of output voltage.(10 marks) 3 (a) Give complete procedure to design schmitt trigger circuit and hence design it for UTP=0.5V and LTP=0.5 V.(10 marks) 3 (b) Explain 4-bit successive approximation type ADC.(10 marks) 4 (a) i) Give design procedure of first order HPF.
ii) Draw functional block diagram of IC 8038.
iii) What is the basic and performance parameter of sample and hold amplifier circuit?(10 marks) 4 (b) Design RC phase shift oscillator to procedure a sinusoidal frequency output of 5KHz.(10 marks) 5 (a) Design triangular waveform generator for frequency of 5 KHz and Vopp=6 using op-amp.(10 marks) 5 (b) Compare normal regulator with SMPS, explain any one circuit of SMPS.(10 marks) 6 (a) Design voltage regulator using IC 723 to give V₀=5V and output current =2A.(10 marks) 6 (b) Explain in detail about frequency multiplier and application of PLL.(10 marks)