LIC (B-TECH Electronics and Communication Engineering 5th)

UNIT I

DIFFERENTIAL AND CASCADE AMPLIFIERS: Introduction, Differential

Amplifier, Differential Amplifier Circuit Configuration, Dual Input-Balanced output

Differential Amplifier, Dual Input-Unbalanced output Differential Amplifier, Single

Input-Balanced output Differential Amplifier, Single Input-unbalanced output

Differential Amplifier with their DC and AC analysis, Differential Amplifier with

swamping resistors, Constant current bias, Current Mirror, Cascaded differential

Amplifier Stages, Level Translator, CE-CB configuration.

UNIT II

INTRODUCTION TO OPERATIONAL AMPLIFIERS: Block diagram of a typical

Op-Amp, Schematic symbol, integrated circuits and their types, IC package types, Pin

Identification and temperature range, Interpretation of data sheets, Overview of typical

set of data sheets, Characteristics and performance parameters of and Op-Amp, Ideal

Op-Amp, Equivalent circuit of an Op-Amp, Ideal voltage transfer curve, Open loop

configurations : Differential, Inverting & Non Inverting. Practical Op-Amp: Input offset

voltage, Input bias current, Input offset current, total output offset voltage, Thermal drift,

Effcet of variation in power supply voltages on offset voltage, Change in Input offset

voltage and Input offset current with time, Temperature and supply voltage sensitive

parameters, Noise, Common Mode configuration and common mode rejection Ratio.

Feedback configurations.

UNIT III

APLICATIONS OF OP-AMP: DC and AC amplifiers, Peaking Amp, Summing,

Scaling and Averaging Amp, Instrumentation Amplifier, V to I and I and to V converter,

Log and Antilog Amp, Integrator, Differentiator. Active filters: First order LP

Butterworth filter, Second order LP Butterworth filter, First order HP Butterworth filter,

Second order HP Butterworth filter, Higher order filters, Band pass filter, Band reject

filters, All pass filter, Phase shift oscillator, Wein bridge oscillator, Quadrature

oscillator, Square wave generator, Triangular wave generator, Sawtooth wave generator,

Voltage controlled oscillator, Basic comparator, Zero crossing detector, Schmitt trigger,

window detector, V to F and F to V converters, A to D and D to A converters, Peak

Detector, Sample and Hold Circuit.

UNIT IV 

SPECIALIZED IC APPLICATIONS: IC 555 Timer: Pin configuration, Block

diagram, application of IC 555 as Monostable and Astable Multivibrator., Phase Lock

Loops: Operating principles & applications of IC 565, Voltage Regulators: Fixed voltage

regulators, Adjustable voltage regulators, Switching Regulators.