when designing all DA14580 RFIO related PCB tracks at 50 Ohm characteristic impedance, and having the DA14580 RFIO output matched to 50 Ohm (by means of the suggested shunt inductor: 3.3nH for the WLCSP, 3.9nH for the QFN packages) a 50 Ohm ceramic antenna ideally can be connected without doing any tuning or matching. For this it's adviced to follow the antenna manufacturer's layout recommedations exactly.
But in practice, by non ideal layout, metal parts relatively close to the antenna, the housing, the antenna can detune and it might be necessary to tune and match the ceramic antenna. It's best to ask the antenna manufacturer for layout guidance. 无论如何,最好reserve some pads for antenna matching/tuning close to the antenna.
Sorry for delay，i follow your instructions of useing matching network,now i have made PCB,Welded components，Download SDK template ,but i can't find my device, i have measure VDCDC(Pin19 1.41V)。
1.41V at Vdcdc is correct. I assume Vbat3V/Vbat_RF is around 3V?
Which SADK SW did you download? It's advised to start with our Proximity Reporter project, this shoud advertise after downloading. With your smartphone you should be able to find it, and then connect.
yes Vbat3V/Vbat_RF is 3.3V ,I use DA1458x_SDK_3.0.6, i didn't found prox_reporter,i use DA1458x_SDK_3.0.6\dk_apps\keil_projects\template\template_fh.unfortunately, i didn't found device,i set some breakpoint,software adv functionly.confuse,can you take a look on my sch & PCB !(how to send email to you)
I'm sorry, but that won't work. Either you download a compiled .hex file using Smartsnippets or Connection manager,
or, in Keil you should select following project to start with: it's the Proximity Reporter project of SDK v3.0.6. \SDK_v_3.0.6\dk_apps\keil_projects\proximity\reporter_fh\fh_proxr_sdk.uvproj
But, I would advise you to start with SDK v3.0.8, it has many improvements, amongst otheres power optimisations.
Hi cuijinfei,
when designing all DA14580 RFIO related PCB tracks at 50 Ohm characteristic impedance, and having the DA14580 RFIO output matched to 50 Ohm (by means of the suggested shunt inductor: 3.3nH for the WLCSP, 3.9nH for the QFN packages) a 50 Ohm ceramic antenna ideally can be connected without doing any tuning or matching.
For this it's adviced to follow the antenna manufacturer's layout recommedations exactly.
But in practice, by non ideal layout, metal parts relatively close to the antenna, the housing, the antenna can detune and it might be necessary to tune and match the ceramic antenna.
It's best to ask the antenna manufacturer for layout guidance.
无论如何,最好reserve some pads for antenna matching/tuning close to the antenna.
I'm sorry for not having a ceramic antenna AN.
We have a AN for PCB printed antennas though: AN-B-027.
http://support.dialog-semiconductor.com/resource/b-027-designing-printed-antennas-bluetooth-smart
Best regards, BB_Dialog.
Dialog Bluetooth Support.
Sorry for delay，i follow your instructions of useing matching network,now i have made PCB,Welded components，Download SDK template ,but i can't find my device, i have measure VDCDC(Pin19 1.41V)。
Hi cuijinfei,
1.41V at Vdcdc is correct. I assume Vbat3V/Vbat_RF is around 3V?
Which SADK SW did you download?
It's advised to start with our Proximity Reporter project, this shoud advertise after downloading.
With your smartphone you should be able to find it, and then connect.
SDK v3.0.8:
\SDK_v_3.0.8\dk_apps\keil_projects\proximity\prox_reporter\prox_reporter.uvproj
Succes.
Best regards, BB_Dialog.
yes Vbat3V/Vbat_RF is 3.3V ,I use DA1458x_SDK_3.0.6, i didn't found prox_reporter,i use DA1458x_SDK_3.0.6\dk_apps\keil_projects\template\template_fh.unfortunately, i didn't found device,i set some breakpoint,software adv functionly.confuse,can you take a look on my sch & PCB !(how to send email to you)
Hi cuijinfei,
I'm sorry, but that won't work.
Either you download a compiled .hex file using Smartsnippets or Connection manager,
or, in Keil you should select following project to start with: it's the Proximity Reporter project of SDK v3.0.6.
\SDK_v_3.0.6\dk_apps\keil_projects\proximity\reporter_fh\fh_proxr_sdk.uvproj
But, I would advise you to start with SDK v3.0.8, it has many improvements, amongst otheres power optimisations.
Best regards, BB_Dialog.