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Operational Amplifiers

Classroom lecture on operational amplifiers and amplifier models. Ideal operational amplifier, T-Network, and linear small-signal equivalent circuit models. Design and analysis of summing, non-inverting, difference, log and anti-log amplifiers. Op-amp applications, transfer characteristics, current mirror and basic differential pair, non-ideal effects, feedback and stability are discussed. Ideal op-amps and operational amplifier model, current-to-voltage and voltage-to-current converters, integrator and differentiator amplifiers, circuit design, BJT Bipolar transistor current mirror, BJT differential pair, small signal equivalent circuit analysis, differential and common mode gains, input impedances, amplifier feedback and stability, ideal closed-loop signal gain, gain sensitivity, bandwidth extension, Bode Plots, Pole Amplifier, phase gain and phase margins, frequency compensation theory, closed-loop frequency response, Miller Effects, Miller Compensation, non-ideal amplifier effects, finite open-loop gain, inverting and non-inverting closed-loop gain, non-zero output resistance, offset voltages, bias currents, slew rate, amplifier temperature effects and CMRR. Throughout the lecture course students will be expected to apply the material to practical experiments in the laboratory section Operational Amplifiers Lab.



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