What is the difficulty of IC design?

IC design is the most upstream of the semiconductor industry chain, and it is also the most mature link in domestic development. Generally speaking, the focus of IC design refers to the design of electronic circuits, in which analog circuit design is very important because analog circuits build the foundation of the electronics industry. For the most common transistor, when we analyze it, we must first analyze the DC bias, and then analyze the AC output voltage, but also pay attention to the operation and amplification in the circuit.

Some engineers suggested that the most important thing in analog circuit technology is to learn more and do more. When you make a film, you will naturally understand what knowledge points need to be mastered. Here we mainly talk about the four knowledge parts required to learn analog circuits. To become a designer of analog circuits, we must master the following four most basic components:

(1) Design of transistor components

It refers to the knowledge of semiconductor engineering. Any IC chip designed will eventually return to it. It is generally derived from the Schrodinger wave equation (more complicated), but it is not directly related to the actual specific design circuit, and This part is indispensable, which is the theoretical basis.

(2) Design of transistor circuit

To engage in analog circuit design, in fact, you must master the basic knowledge of transistor circuits. It is recommended to learn while experimenting and emulating. PSPICE and the like can be used. Just pass one. At the same time, pay attention to think more. After a long time, we will naturally be able to master the design technology of transistor circuits, and we will begin to master the experience with the learning. Transistors and FETs are the basis for building the entire circuit. If you learn it here, the schematic diagrams of many ICs are very intuitive.

(3) Design of functional modules

Functional modules are mainly based on a variety of operational amplifiers, including AD, DA, PLL, voltage regulator sources, etc., which are mainly composed of transistors. The functional module design project will appropriately idealize the components. This part of the study is very important. It is generally from here to learn analog circuits. This part is relatively easy to understand, and it is also the entry point for analog circuit learning.

(4) System design

This part needs a considerable height and needs to consider all aspects. In fact, to be honest, one or two films actually made almost half of them. The key is to experiment and do it.