You can ask RD to get the max. operation current of the circuit.
Second, you need to reference FAB's current density document.
It has the following description of different metal layers.
EX : M1, 1A/um.
Hence, you can get the min requirement of your design.
snola 发表于 2020-7-29 16:55
You can ask RD to get the max. operation current of the circuit.
Second, you need to reference FAB's ...
you are right,不过这个只是适用于我从底层模块开始layout,而且模块大小还是比较小的那种,才能保证每个地方我都是熟悉且保证要求的,如果我只做顶层,而且集成了很多功能模块的话,我没有办法知悉底层模块是否符合要求,这还是需要每个工程师肉眼去check,而且在顶层进行连线时,如果不小心忘记在主干道的power/ground上打孔,而是通过一个比较细的metal进行连接(有时模块的ring会搭在一起),这样lvs可以过,但是这个细metal连接模块的power/ground电流能力就会不够,肉眼去check也是比较麻烦的事情,这种事情也是比较常见的