CC2652P: Balun for CC2652P

albgarc2014

Part Number: CC2652P
Other Parts Discussed in Thread: CC1352P

Hi TI?

I have differents designs for CC2652P and CC1352P.

Allways the same shematic in the PA output (attahed shematic for power amplifier output 2.4GHz). Same as LAUNCHPADCC1352P2.

The designs for CC1352P working perfectly, but the designs for CC2652P has problems with the power amplifier.

The circuit attached is ok for CC2652p power amplifier output 2.4GHz?

Thanks very much.

over 1 year ago

0 ZC over 1 year ago

TI__Genius 10235 points

Hi,

Please can you give more details about the issue(s) you are having with the CC2652P PA output? It is difficult to debug without a description of the issues.

Regards,

Zack

+1 Bun Kuch over 1 year ago

TI__Expert 3380 points

Hi Alberto,

I agree with Zack. What kind of issues are you seeing?

The matching circuit looks good.

Best regards,

Bun

0 albgarc2014 over 1 year ago in reply to ZC

Genius 3215 points

The communication distance with PA (> 5dbm) is very short, even less or the same as without PA (>= 5dmb).

But with CC1352, it works perfect.

0 Bun Kuch over 1 year ago in reply to albgarc2014

TI__Expert 3380 points

Do you have conducted performance measured? If it good, then we'll need to look at hardware settings.

Bun

0 Bun Kuch over 1 year ago in reply to albgarc2014

TI__Expert 3380 points

Would you happen to have an identical board to perform an ABA swap? By moving this IC to another identical board and install a known good IC on this board, we can rule out whether it is a board or IC issue.

Bun

0 albgarc2014 over 1 year ago in reply to Bun Kuch

Genius 3215 points

Hi Bun Kuch

Thank you very much,

I have tried to test on the same board but have not been successful in resoldering.

The designs in electrical schematics are the same, what strikes me is that my designs with CC1352 work perfectly and with CC2652 (different layer boards) always have short range Power Amplifier.

Is there any document explaining how to calculate the values of the passive components in the PA output?

Thank you very much!

0 Bun Kuch over 1 year ago in reply to albgarc2014

TI__Expert 3380 points

This is the app note we start with for impedance matching: https://www.ti.com/lit/an/swra161b/swra161b.pdf?ts=1674663168443&ref_url=https%253A%252F%252Fwww.google.com%252F

If you feel there are issues with the board, please feel free to submit a design review. Having a second set of eyes in a parallel effort is always good.

https://www.ti.com/tool/SIMPLELINK-2-4GHZ-DESIGN-REVIEWS

Bun

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CC2652P: Balun for CC2652P