• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 54 subscribers
  • Views 2132 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.

CC1120 vs CC1101

ram krishnan
Intellectual 820 points

Other Parts Discussed in Thread: CC1101, CC1120

Hi,

  We have been using the CC1101 so far. Want to move to CC1120 to take advantage of higher sensitivity. Noticed that the sensitivity is given for PER of 1 % (20 bytes  packet length) in CC1101  but it is specified for 1 % BER in the CC1120 data sheet.

Our sensor network runs at 10 kbps (GFSK) or 38.4 kbps (GFSK). Can we get the sensitivity numbers at these two rates (in BER/PER) for the two parts when using the least rx filter bandwidth ? Any other advantages of going from CC1101 to CC1120 ? 

Thx

Ram

  • 0
    TI__Guru**** 317180 points
    The relationship between BER and PER can be found here: en.wikipedia.org/.../Bit_error_rate. For CC1120 a PER = 20 % and payload equal to 3 bytes were used. The sensitivity numbers for 38.4 kbps are stated in the CC1101/ CC1120 datasheets

    - CC1120 has better selectivity/ blocking numbers making it more robust in a noisy RF environment.
    - CC1120 sync search is correlator based giving a lot lot lower probability for false syncs than CC1101
    - CC1120 has the ability for RX sniff mode which enables very low Rx current consumption.