Basic Knowledge of Chip Classification: Main Types and Standards

A chip, also known as a microcircuit, microchip, or integrated circuit, is actually a general term for semiconductor devices. Chips come in many categories; depending on the type of signal they process, they can be divided into analog chips and digital chips. Simply put, analog chips rely on the amplification properties of transistors, while digital chips use transistors to act as electronic switches.

Specifically, analog chips are used to generate, amplify, and process various analog signals, including analog-to-digital converter (ADC) chips, amplifier chips, power management chips, PLLs, and more. A key challenge in analog chip design lies in the numerous non-ideal effects, which demand a solid foundation in small-signal analysis, frequency-domain techniques, and extensive practical experience.

In contrast, digital chips are used to generate, amplify, and process various digital signals. These chips typically perform logical operations; examples include CPUs, memory chips, and DSP chips—all of which fall under the category of digital chips. A key challenge in digital chip design is the large chip size and the complex manufacturing processes required, often necessitating collaboration among multiple teams for development.

The CPU, or Central Processing Unit, is the ultimate execution unit for information processing and program operations, serving as the core of a computer system’s functionality and control. As a fundamental hardware component, the CPU manages and coordinates all of the computer’s hardware resources—such as memory, input, and output units.

Basic knowledge of the main types and standard classifications of chips.

Integrated circuits, discrete devices, sensors, and optoelectronics can be classified according to international standards as follows:

Based on their circuit type, they can be categorized into: analog integrated circuits, digital integrated circuits, and mixed-signal integrated circuits.

Based on the type of signal they process, chips can be categorized as follows: analog chips handle analog signals, while digital chips process digital signals. But what exactly are analog and digital signals? Simply put, an analog signal is a continuous signal—essentially, one that flows continuously over time. In contrast, a digital signal is discrete, meaning it exists in distinct, non-continuous steps.

They can be categorized by their functional use into: GPU, CPU, FPGA, DSP, ASIC, and SoC.

Civil-grade (consumer-grade), industrial-grade, automotive-grade, military-grade, aerospace-grade—categorized by different application scenarios;

Since a single chip contains millions or even billions of components, it’s impractical to individually locate and connect each one. The chips are simply too small for traditional soldering techniques. Instead, designers use specialized programming languages to create tiny circuit modules—each carefully crafted with specific functions—and then assemble these modules into larger, more complex circuits. This approach allows the size and density of components on the chip to steadily increase over time, ultimately meeting the demands of various applications.