Analog Circuit Design — Summer 2021

Define the following parameters of Op-Amp: 1) Slew Rate 2) CMRR 3) UGB

Draw and explain block diagram of Op-amp.

What is RC Phase shift oscillator? Brief and derive with necessary equations.

Explain transfer characteristics of an ideal Op-amp?

What is an oscillator? Explain the concept of oscillation with Barkhausen criteria.

Draw the hybrid Π model for a single stage CE transistor amplifier having load resistance Rand obtain the expression for short circuit current gain. L

Draw the hybrid Π model for a transistor in CE configuration and derive the expression for trans conductance g . Justify the validity of this model. m

Define the following terms 1) Input offset voltage 2) Thermal Drift 3) Total output offset voltage

Discuss How op-amp can be used as current to voltage converter.

Derive expression for closed loop gain of a voltage series feedback amplifier using op-amp.

Explain the precision rectifier and draw half wave precision rectifier circuit.

Discuss the features of LM317 Regulator.

Show how Op-Amp can be used as summing, scaling and averaging amplifiers using non inverting configuration.

Draw clipper and clamper circuit with waveform using op-amp

Draw and explain peak detector.

An astable 555 Oscillator is constructed using the following components, R1 = 1kΩ, R2 = 2kΩ and capacitor C = 10uF. Calculate the output1 frequency from the 555 oscillator and the duty cycle of the output waveform.

What is SMPS ? Discuss it’s advantages and disadvantages.

Explain zero crossing detector with circuit diagram and waveform.

Draw and explain Op-amp based two-sided voltage limiter circuit and its response.

Differentiate between active and passive filters.

Discuss magnitude and frequency scaling in filter design.

Draw sallen-key LPF and derive its transfer function.

State the properties of Butterworth filter.

Draw the block diagram of PLL and explain each block.

Show how Bi-quad circuit can be used as a universal filter?