(1) Classification of integrated circuits by functional structure According to their functions and structures, they can be divided into analog integrated circuits and digital integrated circuits. Analog circuits, also known as linear circuits, are used to generate, amplify, and process a variety of analog signals. Signal (a signal whose amplitude varies with the time front. For example, the audio signal of a transistor radio, the tape signal of a tape recorder, etc.) The input signal is proportional to its output signal. Digital integrated circuits are used to generate, amplify, and process various digital signals (signals with discrete time and amplitude values). Such as VCD and DVD playback of audio signals and video signals).

(2) According to the manufacturing process classification Integrated circuits according to the manufacturing process can be divided into semiconductor integrated circuits and thin film integrated circuits. Film integrated circuit is divided into thick film integrated circuit and film integrated circuit.

(3) According to the integration level classification Integrated circuit according to the integration level can be divided into small integrated circuit and medium-sized integrated circuit, very large scale integrated circuit, very large scale integrated circuit, very large scale integrated circuit and very large scale integrated circuit.

(4) Integrated circuits classified by conductive type can be divided into bipolar integrated circuits and unipolar integrated circuits, which are digital integrated circuits. The manufacturing process of bipolar IC is complex and the power consumption is high. Typical integrated circuits are TTL, ECL, HTL, LST-TL, STTL, etc. The single-pole integrated circuit has the advantages of simple manufacturing process and low power consumption, and is easy to be manufactured into large-scale integrated circuits. Circuit, representing integrated circuit has CMOS, NMOS, PMOS and other types.

(5) The classification of integrated circuits can be divided into integrated circuits for TV sets, integrated circuits for audio, integrated circuits for DVD players. Circuit, video recorder integrated circuit, computer (microcomputer) integrated circuit, electronic organ integrated circuit, communication integrated circuit, camera integrated circuit, remote integrated circuit, language integrated circuit, alarm integrated circuit and various application-specific integrated circuit. 1. TV integrated circuit includes line and field scanning integrated circuit, intermediate amplifier integrated circuit, sound integrated circuit, color decoding integrated circuit, AV/TV conversion integrated circuit, switching power supply integrated circuit, remote control integrated circuit, Lein decoding integrated circuit and picture-in-picture processing integrated circuit. Circuit, microprocessor (CPU) integrated circuit, memory integrated circuit, etc. 2. Audio integrated circuit includes AM/FM high frequency and intermediate frequency power supply. Stereo decoder circuit, audio preamplifier circuit, audio operational amplifier integrated circuit, audio power amplifier integrated circuit, ring sound processing integrated circuit, level drive integrated circuit, electronic volume control integrated circuit, delay reverberation integrated circuit and electronic switch. Integrated circuits, etc. 3. The integrated circuit of the DVD player includes the system control integrated circuit, the video coding integrated circuit and the MPEG decoding integrated circuit. Audio signal processing ics, audio ics, radio frequency signal processing ics, digital signal processing ics, servo ics, motor drive ics, etc. 4. The integrated circuit of the video recorder includes the system control integrated circuit and the servo device. Driver IC, audio processing IC, video processing IC.

(6) According to the application field, integrated circuits can be divided into standard general integrated circuits and application-specific integrated circuits according to the application field.

(7) According to the shape, integrated circuits can be divided into circular (metal-shell transistor package type, generally suitable for high-power) and flat (stable quality, small size) and dual in-line plug-in.