RE: connecting nrf52832 to other IC on the same PCB

Automotriz_bgn — Mon, 08 Apr 2019 16:39:05 GMT

ok, thank you so much for your help, and about the RF section, im using 2450AT18B100E for the antenna and to match it with the nrf52 i'm following the reference circuit from page 546, but about the matching circuit for acoppling the antenna to 50 ohm impedance, i dont know if i must add the matching circuit specified on page 2 of the antenna datasheet, or put the 2450FM07A0029 pass filter as one of your coworkers explain in this case (devzone.nordicsemi.com/.../52832-antenna-and-matching-network-chips) or if i need an VNA to obtained antenna´s impedance and design my own PI network, so i would thank you if you could clarify me about that

RE: connecting nrf52832 to other IC on the same PCB

ketiljo — Mon, 08 Apr 2019 08:05:53 GMT

The speed of the data on the lines is slow so there's no need to calculate anything. Just make the connection as you find is the easiest. The only part you need to design carefully is the RF section. Seethe nRF52832 reference layout at https://www.nordicsemi.com/-/media/Software-and-other-downloads/Reference-Layouts/nRF52832CIAARefLayoutv10.zip

Also make sure you have a good and large ground place so the antenna can perform well.