Table of Contents
Operational Amplifiers Fundamentals
Characteristics of Op-amp, Noise figure,
Types of noise, Causes of slew rate, Frequency response, Frequency/phase compensation techniques. SR, CMRR, PSRR/SVRR. Offset adjustment techniques, Comparative study of different amplifier ICs ( LM 741, LM 324, OP 07).
Feedback Amplifiers
feedback amplifiers, Voltage series feedback amplifier (non inverting amplifier with feedback) and deriving closed loop gain. Voltage follower and its applications. Voltage shunt feedback (Inverting amplifier with feedback) and deriving closed loop gain.
Linear Applications of Op-amp with practical Considerations
Voltage summing with averager, Voltage subtractor, Current booster, Integrator and practical integrator, Differentiator and practical differentiator, Instrumentation amplifier with three op-amp and its disadvantage of low CMRR. Current to voltage and voltage to current converter (grounded and floating load.) Isolation amplifiers, Chopper stabilized amplifiers. Equation solving.
Non Linear Applications with Practical Considerations
Comparator characteristics, ZCD and its use, Schmitt trigger with external bias, Window detector, Precision half wave and full wave rectifiers with IC 741.
Sinusoidal oscillators using Op amplifiers : Barkhausen criteria, Wein bridge oscillator, RC phase shift oscillator.
Timers and Voltage Regulators
Timers : Triggerable and retriggerable, IC 555 monostable and astable. Designs and applications. voltage regulators : Linear and switching d.c. voltage regulators : Basic 78 XX,
Switching regulators : (Secondary switching regulators), Basic switching regulator, Current waveforms, Voltage waveforms, Basic stepdown switching regulator.
Active Filters
Butterworth Chebyshev and bessel approximations, Low pass, High pass, Band pass, Band reject, Notch filters. First and second order filters. (Design of LP and HP VCVS equal component filters), Difference between passive and active filters, (Filter terminology : Passband, Stopband, Cut-off, Ripple, Q and order.)
