• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 51 subscribers
  • Views 202 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC1352P: Do I need two baluns when using the 20dBm PA with the CC1352P?

David Straight
Prodigy 40 points
Part Number: CC1352P

I posted this same post in the WiFi forum by mistake. I hope that's okay.  I wasn't sure how to delete the other post.

I'd like to verify with Texas Instruments that the CC1352P will need two baluns and a switch for the Bluetooth when using the 20dBm PA.  

I plan on using the 20dBm PA for the Bluetooth (Sub GHz will not be used).  For this case, will I need to use two baluns and a switch to operate the Bluetooth? 

Balun for receive would connect to pins 1 & 2

Pin 1   RF_P_2_4GHZ
Pin 2   RF_N_2_4GHZ

Balun for the transmit would connect to pins 5 & 6

Pin 5   TX_20DBM_P
Pin 6   TX_20DBM_N

The switch would connect the antenna to each of the baluns.

I'm planing on using the +10dBm circuit as described in the link to swra636c.pdf (and add a switch similar or the same as the SKY13317-373)

https://www.ti.com/lit/an/swra636c/swra636c.pdf?ts=1636053049451&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FCC1352P%253FkeyMatch%253DCC1352P%2526tisearch%253Dsearch-everything%2526usecase%253DGPN

The attached image is a kludge from two schematics - Figure A-1 in the +10dBm 2.4 GHz schematic  (swra636c.pdf) document and the schematic document LAUNCHXL-CC1352P1_SCHEMATIC.pdf from the swrc349a Launchpad.