I want to know what digital integrated circuit design and analog integrated circuit design do.

First, talk about digital and analog design. Nothing more than digital front-end digital back-end, analog front-end (design) analog back-end (layout), because it is simulation, so I am familiar with the simulation process, but because it often involves the whole project until the film comes out, I know something about digital and film packaging, so I will explain it briefly according to my personal understanding. Digital front-end: Simply put, the algorithm code is integrated into the gate-level circuit. Of course, the digital front-end is also considered as simulation and FPGA verification. Digital backend: mainly layout and wiring. Because digital circuits are mostly large signals, the realization of logic units in the layout is regular, and hundreds of thousands or millions of gates are often used, so the realization of the layout mainly depends on tools, among which ICC and SOCencounter are the main tools, but many places also need manual repair. Analog front-end: mainly schematic diagram, pre-simulation, and of course, post-simulation after layout realization is also your task. Simulation backend: actually, it is simulation layout, layout, simulation layout.

In integrated circuits, never have an idea that what you do must be very good, and what has no technical content is very important and needs to be studied. Some people think that the front end needs high technical content, the back end is drawing, and the digital back end is using tools. In fact, this is not the case at all. Take simulation as an example. No matter how strong your design ability is, there is no good layout engineer to help you realize it. All kinds of collocation problems, parasitism and nuisance. In the end, you have made a pile of waste wood, and the area of a good back-end engineer has also been saved, which is money in the company. The same is true of numbers. Don't think that the backend is just a tool. It's simple. I'm telling you, the back end uses the same tools to make the same circuit. The difference between experienced and inexperienced is too far, and the outstanding talents at the back end are precious. If you have a good back-end engineer, you will find it really awesome to do it! The simplest thing is to look at the quotations of those back-end design services to know the importance. That's it. If you have any unclear and different opinions, you can bring them up for discussion. I'm just talking about them from my own experience. In addition, a friend upstairs said that real NBs are all simulated, but I still don't quite agree. Although I also do simulation and know the importance of simulation, when I do mixed-signal chips and SoCs, I can only say that digital simulation is equally important, and analog performance is indeed a big difficulty, but digital performance is not just about completing functions. Remember that the final product is for mass production, not only for simple implementation, but also for cost efficiency.

As for reading, I won't say more about numbers. I have seen some figures before, but they are all superficial (after all, I don't do this, just to understand the process). Mainly talking about simulation: Lazawi's book is indeed one of the treasures. This Chinese translation is good. It is suggested that you can read Chinese first, and you can have a general understanding and preliminary understanding of the content. Reading Chinese is still fast, just reading it once is not enough. This book will often be used for reference in the future, including the most important after-school exercises in Lazavi's book. This is a very valuable part of this book. In addition, let's take a look at four suggestions in this regard: First, Allen-Design of CMOS analog integrated circuits can be used in both Chinese and English. Second, Lazavi-"Analog cmos Integrated Circuit Design". 3. Gray —— Analysis and Design of Analog Integrated Circuits (Master Gray, the originator, but bjt talks more in this book). I've seen the English version, but I haven't seen the Chinese version. I don't know how. Martin and Johannes-Analog Integrated Circuit Design (it's really good, but unfortunately there is no English version of this book in China, but don't read the Chinese version, the translation is rubbish, go online and download it, there is a scanned English version).