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CC2591 design

Rahul Sen
Prodigy 10 points
Other Parts Discussed in Thread: CC2591

i want to use CC2591 for RF front end for at86rf231. the input impedance for CC2591 has not been specified in the datasheet.

According to the CC2591 reference design for CC2951EM module balun LDB182G4520C-110 has been used.

LDB182G4520C-110 converts 200 ohm differential impedance to 50 ohm single ended one.

Does it means that the input impedance is 200 ohm????

But in the other designs, the other chips like cc243x and cc25xx are  directly connected to the CC2591. Both are of different load impedance(not 200 ohm).

can somebody please point out the correct value for this parameter???

 

Any help would be apperciated.

 

  • 0
    TI__Mastermind 18780 points

    Hi,

    TI does unfortunately not support designs using the CC2591 with non-TI transceivers. When using the CC2591, I highly recommend you choosing to use it with a TI tranceiver to ensure the shortest possible development time and performance. TI also has third-party vendors making modules with the CC2591 and TI tranceivers for instant Radiocraft, thus making the design process even easier. TI offer several combo designs using the different TI tranceivers in combination with the CC2591. Alot of effort has been put into these designs to ensure the best possible performance and the matching between the TI tranceivers and the CC2591 thus reflect the best trade-offs in order to ensure good performance (output power, PAE, etc) and stabiltiy.

     

    Charlie