CC2640 RF track width and keep out distance

Vismita Jani80

Other Parts Discussed in Thread: CC2640, CC2540

Hello,

We are working one project in that we are using CC2640_4x4 BLE chip.

We are designing our board using CC2640. We are designing RF antenna section for this.

Can anyone provide us the detail of the track width for RF antenna matching 50 OHM impedance for RF antenna (We are using Ceramic Antenna)? And also provid provide the detail for Route Keepout detail for antenna portion. Also guide us in terms of points or take care we have to keep in mind while designing RF portion in schematic.

Thanks and regards,

Vismita Jani

over 10 years ago

0 CHS over 10 years ago

TI__Mastermind 18780 points

Hi,

Have you looked at our BLE wiki

There you will find links to these pages: http://processors.wiki.ti.com/images/8/8b/CC26xx_HW_training_Layout_Considerations.pdf

and http://processors.wiki.ti.com/index.php/CC26xx_HW_Checklist where you will also find a link to a trace impedance calculator. The Route Keepout for the antenna is given by the antenna vendor.

0 Vismita Jani80 over 10 years ago in reply to CHS

Intellectual 385 points

Hi,
Thank you for your reply.

0 Vismita Jani80 over 10 years ago in reply to Vismita Jani80

Intellectual 385 points

Hello,

As you know we are using CC2640 we have one query regarding balun selection.

e2e.ti.com/.../1435071

As per mention in this forum balun LFB182G45BG2D280 used for CC2540 chip and for CC2640 chip recommended balun is LFB182G45BG5D920. But right now LFB182G45BG5D920 is not available in the market.

So please suggest us the alternative balun part for the CC2640 chipset.

Thanks and Regards,
Vismita Jani.

0 Fredrik K over 10 years ago in reply to Vismita Jani80

TI__Guru** 106705 points

Hi Vismita,

LFB182G45BG5D920 is most definitely in mass production and in the market. Please contact your local Murata contact for details.

Cheers,
Fredrik

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CC2640 RF track width and keep out distance