Welcome to this lecture on “Introduction to Analog Integrated Circuits” . In this lecture , the following topics are discussed
Introduction to Analog Integrated Circuits
Operational Amplifier (Op-Amp) is a type of analog Integrated Circuit (IC) that typically contains multiple transistors, resistors, and capacitors, all fabricated on a single Silicon chip. These ICs are widely used in signal processing and amplification applications. IC741 is one of the most well-known and commonly used operational amplifiers.
Applications of Op-Amp:
Operational amplifiers (Op-Amps) are versatile electronic components widely used in various applications due to their high gain and ability to amplify weak signals. Some common applications of Op-Amps are Inverting amplifier, Non-Inverting amplifier, Adder, Integrator, Differentiator, Log and Anti-log amplifier.
Inverting Operational Amplifier:
An inverting operational amplifier is one of the basic configurations of an Operational Amplifier (Op-Amp) circuit, where the input signal is applied to the inverting terminal of the Op-Amp. In this configuration, the output signal is inverted (180° phase shift) relative to the input signal and is amplified by a certain factor.
Non-Inverting Amplifier:
A non-inverting amplifier is another common configuration for an Operational Amplifier (Op-Amp), where the input signal is applied to the non-inverting terminal of the Op-Amp. In this configuration, the output voltage is in phase with the input signal (no phase inversion), and the signal is amplified by a certain factor.
Differential Amplifier
A differential amplifier is an Operational Amplifier (Op-Amp) circuit that amplifies the difference between two input voltages while rejecting any signals that are common to both inputs. This type of amplifier is widely used in applications where it is important to measure the difference between two signals, such as in instrumentation, audio, and sensor systems.

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