nRF8001 Recommended Resistor Size

[navid84]

Hello,

I am currently designing a custom PCB with the nRF8001 chip. For a smoother assembly and component procurement, I am looking to make all the resistors on the board a standard size. I saw that on the datasheet the resistors were listed as 0402 size resistors. The rest of the PCB is using 0603 size resistors so I was wondering if a larger size resistor would decrease the performance of the chip antenna or cause any other problems that I should be careful of?

Thanks in advance!

[run_ar]

Hi,

Is there a particular reason you are looking at the nRF8001? It is getting old, so if you are just starting a new project I would advice you to look at the nRF52 series chips.

[navid84]

Hi,

Thanks for the advice, I looked at the nRF52 series chips and they all seem overkill for my application. I am using an ATSAMD21 for the main microcontroller so using another 48-QFN chip seems to make for excessive complexity and higher production cost of the product. Are there chips in the new series that are only SPI converters and don't have any other pin outputs that are not necessary for Bluetooth functionality? Also just asking with the main question, would using 0603 resistors be fine instead of 0402 as said in the datasheet for the nRF52?

Thanks again

[run_ar]

For any components in the antenna circuit I would advice using the recommended component size.

As for the newer chips they are quite flexible. i.e you could use a nrf52810 with a ble uart example and it would be fairly straight forward to get this to work. But it means some development would have to be done on the nrf chip as well, not only the ATSAM