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Newbie
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Registered: ‎10-04-2018

Zynq 7030 decoupling cap

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Hi, i am designing a PCB with a zynq7030 (FBG676) on board, while drawing the decoupling capacitors for Z7030, i spotted the amount of small value decoupling capacitors (0.47u or lower) listed in document UG933 page 13, Table 3-1 in much less than Artix-7. Do I need to follow the conventional rules of Artix-7 by adding one 0402/0201 capacitor per power pin? Or is there a reason for the lack of small value decoupling capacitors in teh requirement. Thanks.

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Moderator
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Registered: ‎07-23-2015

@onedino 


Or is there a reason for the lack of small value decoupling capacitors in teh requirement. Thanks.

Yes, the reason being Z-7030 equivalent PL fabric is Kintex-7 and not Artix-7. Z-7020 and below are Artix-7 while Z-7030 and above are Kintex-7 PL fabric. Check Table -1 in DS190

 

So the device you mentioned follows the Kintex-7 decoupling guidelines and quantity match with the FBG676 package of Kintex-7 in Table 2-3 of UG483

 

So you can follow what is listed in UG933

- Giri
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Registered: ‎07-23-2015

@onedino 


Or is there a reason for the lack of small value decoupling capacitors in teh requirement. Thanks.

Yes, the reason being Z-7030 equivalent PL fabric is Kintex-7 and not Artix-7. Z-7020 and below are Artix-7 while Z-7030 and above are Kintex-7 PL fabric. Check Table -1 in DS190

 

So the device you mentioned follows the Kintex-7 decoupling guidelines and quantity match with the FBG676 package of Kintex-7 in Table 2-3 of UG483

 

So you can follow what is listed in UG933

- Giri
--------------------------------------------------------------------------------------------------------------------
There's no such thing as a stupid question. Feel free to ask but do a quick search to make sure it ain't already answered.
Keep conversing, give Kudos and Accept Solution when you get one.
-----------------------------------------------------------------------------------------------------------------------

View solution in original post

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Newbie
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Registered: ‎10-04-2018

Thanks for the quick answer. :P

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