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CC2340R5: RF Performance Issue Post-Replacement of CC2340R5 with CC2340R22

Part Number: CC2340R5

Tool/software:

Hello Texas Instruments Community,

I hope this message finds you well.

Our team has recently encountered an issue that we're hoping to get some guidance on. We have a PCB that originally used the CC2340R5 IC. We decided to replace it with the CC2340R22, as we believed they were functionally equivalent for our purposes.

Description of the Issue: After replacing the IC and conducting tests, we've noticed a significant degradation in RF performance. When we attach an attenuator set to -60 dBm to the RF section, we experience almost complete packet loss in both transmission and reception with the CC2340R22.

Our Question: Are the RF sections of the CC2340R22 and CC2340R5 identical? If there are differences, could they be the cause of the performance issues we're experiencing?

Request for Assistance:

  1. If there are differences in the RF hardware between the two chips, could you please advise on what changes we might need to make in our design to accommodate the CC2340R22?
  2. Can you provide any documentation or resources that detail these differences and how they might impact RF performance?
  3. Are there any known issues with the CC2340R22 that we should be aware of, especially concerning RF performance?

We believe that understanding these details will be crucial for us to resolve this issue effectively. Any insights or documentation you can provide would be greatly appreciated.

Thank you for your time and assistance. We're looking forward to your response.

Best regards,