An integrated circuit is a device with certain functions formed by integrating transistors, resistors, capacitors and other components on a silicon substrate using a special process. The English abbreviation is IC, also commonly known as chip.
An analog integrated circuit refers to an analog integrated circuit that is integrated with components such as resistors, capacitors, and transistors to process analog signals. There are many analog integrated circuits, such as integrated operational amplifiers, comparators, logarithmic and exponential amplifiers, analog multipliers (divisions), phase-locked loops, power management chips, etc. The main components of the analog integrated circuit are: amplifier, filter, feedback circuit, reference source circuit, switched capacitor circuit, etc. The analog integrated circuit design is mainly obtained through manual circuit debugging and simulation by experienced designers, and the corresponding digital integrated circuit design is mostly generated automatically through the use of hardware description language under the control of EDA software.