Operational Amplifier: Comparator and Differential Amplifier

This lecture covers the operational amplifier functioning as a simple comparator, both in non-inverting and inverting configurations, and explores practical applications such as polarity detectors and low battery indicators. It also delves into the analysis of the operational amplifier in negative feedback and the ideal diode rectifier. The differential amplifier operation is discussed, including the common mode rejection ratio and the high-performance differential amplifier. The lecture concludes with the analysis of the general case of the differential amplifier and the thresholds comparator, both in inverting and non-inverting configurations.