Introduction to Linear/Non-linear Circuits, Amplifier fundamentals, Controlled Sources.Two-port Networks, Feedback Concepts: Feedback topologies. Positive and Negative feedback, Effect of Negative feedback on basic amplifiers, Instability in amplifiers, Barkhausen condition for Oscillations. Opamp ideal characteristics, Non idealities of Opamps and their effects: Finite gain, Finite bandwidth, Offset voltages and currents. Non-inverting and Inverting Amplifiers, Voltage Follower, Summing Amplifiers. Difference amplifiers, Opamp differentiator, Opamp integrator, All-pass filter (Active phase shifters), Passive Filters - First and Second order filter transfer functions (low pass, high pass, band pass and band reject), Butterworth response. Emulation of inductor using gyrators, Transconductor-Capacitor Filters, Active-RC Filters, Sallen-Key biquadratic low and high-pass filters. Tow-Thomas biquad, Realization of higher order filters. Non-linear Applications of Opamps: Comparators, Schmitt trigger (Inverting & Non- Inverting). Astable Multivibrator, Triangular wave generator, Oscillators, RC Phase shift, Wienbridge, LC and Crystal oscillators, Precision rectifiers