Analog Circuit Design — Summer 2024

Draw and explain block diagram of an op-amp.

Draw Hybrid-π equivalent circuit for CE transistor. Also derive the equation of transconductance g . m

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

Define following terms : (1) CMRR (2) Input Bias Current (3) Input Offset Current

Explain the characteristics of ideal op-amp.

Draw and explain with necessary figure the single stage CE amplifier response. Also explain the significance of Gain Bandwidth product.

Explain application of an op-amp as summing, scaling and averaging amplifier (Inverting configuration).

Draw and explain voltage transfer characteristics of an op-amp.

Draw BJT based emitter coupled differential amplifier circuit. How can we improve its CMRR?

Draw and explain op-amp based wien-bridge oscillator circuit and obtain frequency of oscillator.

What is thermal drift? How does it affect the performance of an op-amp circuit?

Explain Voltage to Current convertor using op-amp with ground load.

Draw and explain voltage shunt feedback amplifier, also derive expression for Input resistance, Output resistance.

Define slew rate of an op-amp. What are its causes?

Explain operation of PLL with basic block diagram.

Explain the basic differentiator using an op-amp. Obtain expression for output voltage with necessary waveforms.

What do you understand by precision rectifier? Draw half wave precision rectifier circuit.

Draw and explain Schmitt trigger circuit.

Explain with a neat diagram and waveforms, the operation of a monostable multivibrator using 555 timer.

Explain zero crossing detector with circuit diagram and wave forms.

Discuss magnitude scaling and frequency scaling in filter design.

Show how Bi-quad circuit can be used as a universal filter.1

Compare active and passive filter.

Compare linear ad switching mode regulators.

Draw Sallen and Key low pass filter circuit and obtain its transfer function.