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DS90UB914A-Q1: Power supply pins capacitors

Shuji Ishiwata
Mastermind 8400 points

Part Number: DS90UB914A-Q1

Tool/software:

Hi All,

I have a question about the DS90UB914A.

(1) The data sheet recommends 0.01uF, 0.1uF, and 22uF capacitors for VDDCML0/1, but the EVM uses 0.1uF, 1uF, and 22uF.
Which recommendation should I follow?

(2) The data sheet recommends 0.01uF and 0.1uF capacitors for VDDR and VDDD, but the EVM uses 0.1uF and 1uF.
Which recommendation should I follow?

(3) The data sheet recommends 0.01uF and 0.1uF capacitors for VDDSSG, but the EVM uses 0.1uF and 1uF, and it is isolated from other power supplies by a 0Ω resistor.
The EVM seems to have a better bypass effect, so which recommendation should I follow?

(4) Regarding the VDDPLL capacitors, the data sheet recommends 0.01uF and 0.1uF, but the EVM uses 0.1uF and 1uF.
Which is better to follow?

(5) Regarding the VDDIO1, 2, and 3 capacitors, the data sheet recommends 0.01uF, 0.1uF, and 4.7uF, but the EVM uses 0.1uF, 1uF, and 22uF.
Which is better to follow?

Best Regards,
Ishiwata