What is analog integrated circuit?

Analog integrated circuits mainly refer to integrated circuits that are composed of capacitors, resistors, transistors, etc., and are used to process analog signals. There are many analog integrated circuits, such as operational amplifiers, analog multipliers, phase-locked loops, power management chips, etc. The main components of analog integrated circuits are: amplifiers, filters, feedback circuits, reference source circuits, switched capacitor circuits, etc. Analog integrated circuit design is mainly obtained through manual circuit debugging and simulation by experienced designers. In contrast, most digital integrated circuit designs are automatically synthesized under the control of EDA software using hardware description languages.

Analog integrated circuits are widely used in various audio-visual equipment. Even though tape recorders, televisions, and audio equipment are known as "digital devices," they are inseparable from analog integrated circuits.

In fact, analog integrated circuits are more complicated to apply than digital integrated circuits. As long as the components of each digital integrated circuit are good, it can generally work according to the predetermined function. Even if the circuit does not work properly, it is relatively easy to repair. 1 is 1, 0 is 0, without ambiguity. Analog integrated circuits are different. Generally, a certain number of peripheral components are required to work with it. So, since it is an "integrated circuit", why don't all peripheral components be built in? This is because of the limitations of the integrated circuit manufacturing process, and it is also to make the integrated circuit more adaptable to different application circuits.

Home appliance repair personnel are very concerned about the parameters of analog integrated circuits and the voltage of each pin online, and they rely on these to judge faults. For amateur electronics enthusiasts, it is enough to understand what commonly used integrated circuits are used for, and then look up relevant information when they are needed.