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Altera_Forum's avatar
Altera_Forum
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8 years ago

Power decoupling capacitors placement

Hi all! I'm going to develope a board with Cyclone V SoC in UBGA484 or UBGA672 (in both packages distance between balls is 0.8 mm). I have several Terasic development kits with Cyclone V and Cyclo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

IMHO you must place decoupling caps directly under the FPGA on the appropriate pins. I do this all the time, using 0402 capacitors and a 0.8mm pitch BGA part. Manufacturing is not a problem, if your vendor can't handle it, many others can.