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Mon, 2019-09-16 03:11
#1
魏文彬
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Joined:2019-04-10 03:51
Radio frequency interference

Hi DA team,

Will the DA chip generate RF interference on the 1v8 or p1v8 power supply when Bluetooth is launched?

I found that when I used an external ADC (powered with p1v8) to capture audio data, it would cause the ADC to collect RF noise whenever Bluetooth transmitted data. There is no such noise when Bluetooth is not transmitting. Will it interfere with the P1V8 power supply when Bluetooth sends data? I used the battery to power the DA14682, using an LDO.

How can I solve this RF interference problem?

thanks very much!

Device:
DA1468x
Mon, 2019-09-16 17:43
PM_Dialog
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Hi,

Hi,

Many thanks for your question. Can you please clarify if you have a custom board or you are using any of our development kits?

Thanks, PM_Dialog

Tue, 2019-09-17 01:45
(Reply to #2)
魏文彬
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Joined:2019-04-10 03:51
i using custom board

i using custom board

Can you provide a pcb wiring reference？

Tue, 2019-09-17 17:39
PM_Dialog
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Hi,

Hi,

Please follow the link below and you will find schematics and PCB files for the DA1468x development kit. You can use them as a reference:

//www.wsdof.com/products/da14683-development-kit-pro

Also, in the AN-B-061 you will find hardware design guidelines:

//www.wsdof.com/sites/default/files/an-b-061_da1468x_application_hardware_design_guidelines_v1.9.pdf

Thanks, PM_Dialog