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LAUNCHXL-CC2640R2: Transmitter Signal to Noise specification

James Hillman
Expert 1355 points
Part Number: LAUNCHXL-CC2640R2

For my application, I need to understand the signal-to-noise (SNR) of the transmitter i.e. what is the in-band noise power? Currently I am looking at the adjacent channel power as a rule of thumb. Many thanks, James. 

  • 0
    TI__Guru**** 317180 points
    Not sure if we have some numbers here since when we measure TX we measure the total output power.

    Is it possible to elaborate why you need this number?
  • 0 in reply to TER
    Expert 1355 points

    Thanks TER for the fast reply.

    We are doing a tracking beacon application, and the theory tells us that at close range the transmitter SNR is the limiting factor.

  • 0 in reply to James Hillman
    TI__Guru**** 317180 points
    As said we don't haven't done any measurements on this. ACP will give an indication but in many cases what you see in the adjacent channel is also some energy of the signal modulation. For this I would assume that you should do some measurements yourself if possible. Using a CW, a low RBW, it should be possible to measure the power at the in band frequencies with the PA on.