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.

CC1120: Balun/IPC @ 433MHz ..?!

Genius 3985 points
Part Number: CC1120
Other Parts Discussed in Thread: CC1352R, CC113L, CC1101, CC110L, CC115L, CC1352P, , CC1312R

Gents,

just found the STMicroelectronics' BALF-112X-02D3, which is what we look for since years: a 433Mhz balun that saves a lot of parts.

Before we now go into evaluation: aren' there any people out there who did this already and could share your findings?

thx !

  • P.S. Found something from Murata (LFD21433MMF5E258) & Johansson (0434BM15B0027E) too, but they refer both to 'matching to SI EFR32'.

    STM instead refers explicit to TI CC112x! But they don't deliver in-depth data sheets.

    Any hints welcome?

  • The ST IPC was developed without TI involvement and I don't know the performance if this is used. Since ST is a direct competitor we don't promote the ST IPC.  

  • TER,

    any clue why your not-competitors offer 433MHz IPC's, but not for TI?
    That's annoying ..

    And, as a remark, you guys from TI should promote whatever helps to sell CC112x. Example: I just choosed another 434MHz-chip due to space constraints with CC11x & discrete balun.

  • Hi,

    We agree that space constraint is a important issue and this is why we have released a combined 433 MHz and 2440 MHz IPC that is matched towards CC1352R in a 2.00 x 1.25 mm package.

    App note swra629 is for 863-928 MHz and 2440 MHz IPC and will be updated soon to include the 433 MHz and 2440 MHz IPC as well.

    433 MHz IPCs are available for CC110x series. Part number: 0433BM15A0001 from Johanson Technologies.

    Regards,

       Richard

  • Richard,
    if the combined balun can be used soley for 433MHz in a CC112x-system, it might fit and will be evaluated. But I doubt: as I know the CC13xx has different connectors.

    CC110x-IPC can't be used for CC112x, right?

    So what else can I do if I use 433Mhz?

    Frankly: more than glad that somebody developped something for CC112x

  • Hi,

    An overview of the IPCs is available in Chapter 8 in the following app note: 

    For 433 MHz IPCs, we have for CC110x and for CC13xx but not for CC112x. The IPCs are designed specifically (conjugate match with filtering) for a particular chip-set family.

    CC1101, CC1111, CC1110, CC110L, CC113L, CC115L, CC430 : 430 - 435 MHz, Johanson Technology, Part nr: 0433BM15A0001

    CC13xx 430-510 MHz, Walsin, Part nr: RFBLN2520090YC3T10

    CC1352R, CC1352P 430 - 435 MHz, 2400 - 2480 MHz, Murata, Part nr: LFB21433MDZ6F112

    Why not use CC13xx or CC110x instead of CC1120 that has a 433 MHz IPC available ?

  • Richard,

    your last remark 'why not use' leads me to an open wound with TI:

    today CC112x is the one and only chipset with narrow band and -123dBm sensivity @4kbaud.
    CC110x is far away in terms of RF abilitys and I lost hope that CC13xx will ever be there. Why TI hasn't launched yet something like a RF-only "CC1320", without all that nice ARM etc. stuff around it? If I compare CC112x chip cost with what I have to spend for CC1312 in our typcial cost sensitive environment, I always come back to CC112x.
    Not mentioning all the work our developers have to invest to become familar with RTOS & Co. Frankly, we tried. But after 8 weeks I pulled the emergency break: as soon as they stepped away from the path that TI's template applications provide, they got stuck. I don't know the exact reasons for that, but I can't spend that time & money for something which I can't oversee.

    Sorry for that, but you pressed the 'right' button asking 'why don't you use...'

    regards

    GGA

  • Hi,

    Appreciate your honesty and feedback. 

    Please contact your local TI sales/FAE for the latest information/roadmap.

    Narrowband applications and CC112x is an excellent choice for the transceiver and has far superior RF performance than CC110x family.

    There are narrowband PHYs now available for the CC13xx family as well. Please refer to the CC1312R datasheet. 

    Regards,

       Richard