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11033 Pages: 2

PART (^

Answer any two full questions, each carries 20 marks.
Explain the operation of Phase Locked Loop. What is lock range and capture
range?
With the help of internal diagram explain the monostable operation of timer IC
555. Draw the input and different output waveforms. Derive the equation for pulse
width.
Explain the working of successive approximation ADC
Discuss the operation of dual slope ADC
What is a sample and hold circuit
Discuss how digital signal is converted into analog signal in a weighted resistor
DAC.
Explain the internal diagram of I.C. 723

Explain how current boosting is achieved using I.C 723

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