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PSOC 4 BLE reduce bypass capacitor for smallest PCB | Cypress Semiconductor

PSOC 4 BLE reduce bypass capacitor for smallest PCB

Summary: 6 Replies, Latest post by c.buekban_1650646 on 24 Sep 2016 08:35 PM PDT
Verified Answers: 2
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c.buekban_1650646's picture
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10 posts

Can i use one bypass capacitor 10uF(0603)+0.1uF(0402) at all VDDR(4pin), VDDA(2pin) pin for reduce PCB size?

 

thank you.

user_242978793's picture
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1361 posts

What device are you using?

c.buekban_1650646's picture
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10 posts

CY8C4247LQI-BL483

c.buekban_1650646's picture
User
10 posts

now i use x4 (1uF+0.1uF) for VDDR 4 pins, and 2x for VDDA 2 pins

user_242978793's picture
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1361 posts

Here is what Cypress says about the Caps.

 

user_242978793's picture
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1361 posts

My input you can never have too may caps. This is an RF circuit and needs all of the caps it can get and special analysis of the circuit board and layout of the same.  If you are using a PCB antenna then it can leak into the chip which can cause all kinds of issues. 

c.buekban_1650646's picture
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10 posts

My PCB have 6 layer and using chip antenna.

thank  you bobgoar.

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