John Xu
Member level 3

Hi,
i have a question on the vdd and grounds in a chip. I noticed in lot of pruduts(chips), there are multiple vdd and grounds in one chip. I did not mean the different vdds/grounds for analog and digital part, respectively. I mean there are multiple vdd/ground for just analog part, multiple vdd/ground for digital part.
As I know, there are the concerns such as low-freq vdd, high-freq vdd, and other concerns for vdd and ground route easily in layout, etc..
Would anyone tell me any other considerations behind it?
Thanks in advance
i have a question on the vdd and grounds in a chip. I noticed in lot of pruduts(chips), there are multiple vdd and grounds in one chip. I did not mean the different vdds/grounds for analog and digital part, respectively. I mean there are multiple vdd/ground for just analog part, multiple vdd/ground for digital part.
As I know, there are the concerns such as low-freq vdd, high-freq vdd, and other concerns for vdd and ground route easily in layout, etc..
Would anyone tell me any other considerations behind it?
Thanks in advance