PSOC 4 BLE reduce bypass capacitor for smallest PCB

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chbuc_1650646
Level 2
Level 2

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

   

 

   

thank you.

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1 Solution
rola_264706
Level 8
Level 8
50 likes received 25 likes received 10 likes received

Here is what Cypress says about the Caps.

   

 

   

View solution in original post

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6 Replies
rola_264706
Level 8
Level 8
50 likes received 25 likes received 10 likes received

What device are you using?

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chbuc_1650646
Level 2
Level 2

CY8C4247LQI-BL483

   

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chbuc_1650646
Level 2
Level 2

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

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rola_264706
Level 8
Level 8
50 likes received 25 likes received 10 likes received

Here is what Cypress says about the Caps.

   

 

   

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rola_264706
Level 8
Level 8
50 likes received 25 likes received 10 likes received

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. 

chbuc_1650646
Level 2
Level 2

My PCB have 6 layer and using chip antenna.

   

thank  you bobgoar.

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