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SYLLABUS

UNIT-I

Differential Amplifiers: Differential amplifier configurations, Balanced and unbalanced output differential amplifiers, Current mirror, Level translator. Operational Amplifiers: Introduction, Block diagram, Ideal op-amp, Equivalent circuit, Voltage transfer curve, Open loop op-amp configurations. Introduction to dual op-amp TL082 as a general purpose JFET-input operational amplifier.

UNIT-II

Introduction, Feedback configurations, Voltage series feedback, Voltage shunt feedback and differential amplifiers, Properties of practical op-amp. Frequency Response: Introduction, Compensating networks, Frequency response of internally compensated op-amps and non compensated op-amps, High frequency op-amp equivalent circuit, Open loop gain Vs frequency, Closed loop frequency response, Circuit stability, Slew rate.

UNIT-III

D.C and A.C amplifiers, Peaking amplifier, Summing, Scaling and averaging amplifiers, Instrumentation amplifier, Voltage to current converter, Current to voltage converter, Integrator, Differentiator, Active filters, First, second and third order Butterworth filter and its frequency response, Tow-Thomas biquad filter.

UNIT-IV

Oscillators, Phase shift and wein bridge oscillators, Square, Triangular and Sawtooth wave generators, Comparators, Zero crossing detector, Schmitt trigger, Characteristics and limitations. Specialized Applications: 555 timer IC (Monostable and astable operation) and its applications, PLL, Operating principle, Monolithic PLL, Applications, Analog multiplier and phase detection, Wide bandwidth precision analog multiplier MPY634 and its applications.

UNIT-V

Analog and digital data conversions, D/A converter – Specifications – Weighted resistor type, R-2R ladder type, Voltage mode and current-mode R-2R ladder types-Switches for D/A converters, High speed sample-and-hold circuits, A/D converters – Specifications – Flash type – Successive approximation type – Single slope type – Dual slope type – A/D converter using voltage-to-time conversion – Over-sampling A/D converters.