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Altera_Forum
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16 years ago

Vcca regulation requirements

I'm designing a board with a Cyclone III EP3C16E144, and I made the mistake of copying a similar board with a Cyclone I part on it. I've cleared up most of the errors, but I am having a bit of troubl...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

the vcca pins on the cyclone III BGA pcb here are tracks on the bottom layer in fact they are a polygon fill with a wide track to the LDO. This design is using a 4 layer pcb with cyclone III SDRAM and some other stuff like 2 chanel 12 bit adc 20MSPS the components are very densed and the plane distance is 50µ and it has passes alle approvals including R&TTE

so no worry about vcca