日志
基本知识|
- 分享 Channel length 与 threshold voltage的关系
- 1um以下时， 由于short channel effect， L与Vth成正比 1um以上时， L与Vth反比，减小到一定值后保持不变 可以对管子扫描验证 原理参考伯克利EE240
- 分享 Virtuoso中如何建立config
- A config view allows you to use different views for different cells during netlisting. When ADE netlist a schematic directly, every instance has to be netlisted according to the viewList and stopList values which have been specified. When netlisting through a config view, users can set different vi ...
- 分享 【转】版图 注入区(N+/P+)和扩散区(diffusion)的区别
- 版图中注入区和扩散区有啥区别？ 注：有源区：一般用AA或者OD表示，定义为：Definition of diffusion area 注入区：有N+注入区和P+注入区，一般分别用NP和PP表示，定义为：N+(or P+) implantation definition 版图中的diffusion区域对应于mask中的active层。在标准c ...
- 分享 如何设计管子的长宽
- 先转一篇 “刚才你们说到管子的长宽。其实在实际设计时，管子的长宽不是随便选定的，而是根据 电路要求的精度，推算出设计时的随机偏离误差(offset，一般要求是三倍的协方差， 有的高精度要求六倍的协方差)，再由offset推出管子的长宽。一般来说，对电流镜而 言，电流偏差与长 ...
- 分享 What does a two overlapping circles symbol mean？
- Two overlapping circles represents a current source. In this case, it is being used to sink a certain minimum amount of current through the output transistor, in order to keep its dynamic impedance low and improve the overall frequency response. Current sources (and sinks) ...
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