Decoupling capacitor values for nRF52

RE: Decoupling capacitor values for nRF52

Priyanka — Tue, 25 Jul 2023 08:31:49 GMT

Hi James,

The "safe range" or the "nominal values for operation" are what is recommended by us, i.e. the 100nF (with a tolerance of +/-10%). We always recommend to NOT CHANGE the cap value, but you are free to test it just that we will not guarantee the performance.

Also, we cannot share further specific details regarding the design, other than what is available in the P.S and documentation.

-Priyanka

RE: Decoupling capacitor values for nRF52

jgartrel — Mon, 24 Jul 2023 14:48:14 GMT

Thank you so much for looking into this

RE: Decoupling capacitor values for nRF52

Priyanka — Mon, 24 Jul 2023 13:09:09 GMT

Hi James,

I am looking into this and will get back to you soon with a response. Please expect a slight delay as I am also looking int a few other cases too as we are short staffed at the moment due to the summer holidays here in Norway.

Thank you for your patience and understanding.

Regards,

Priyanka

RE: Decoupling capacitor values for nRF52

jgartrel — Thu, 20 Jul 2023 15:02:03 GMT

Also what is the critical timing requirements for startup and Brown out Reset that drive the sizing ratios of the decoupling capacitors for the board? That would be helpful to know so that I can size them appropriately, especially in space and power constrained applications.

RE: Decoupling capacitor values for nRF52

jgartrel — Thu, 20 Jul 2023 14:49:21 GMT

What is the safe range for DEC1?

RE: Decoupling capacitor values for nRF52

Priyanka — Thu, 20 Jul 2023 13:00:36 GMT

Hi James,

It's mainly a safe range that is mentioned. If the size of the capacitor increases, this can affect the start up times and also affect the Brown out Reset (BOR) behavior too. It can also affect the programming.

Best Regards,

Priyanka