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.

CC1190: CC1190

Part Number: CC1190


Hello E2E.

Designing using CC1190, Tx application, 800-950 [GHz] :

For designing Tx chain ,spread sheet calculation, there is need for the NF parameter of the CC1190 total Tx chain (pre AMP cascade to PA inside IC).

  • According to the data there is indication for the LNA NF. but what is the NF for the Tx ? 
  • What is the output noise floor from Tx out terminal of the CC1190 ?

BR

Gil.

  • Fixing:

    Designing using CC1190, Tx application, 800-950 [MHz

  • NF is typically used for the receive chain and as far as I know we don't we don't have that number for TX.. I have never seen NF used for a PA, could you show how NF is relevant in TX? 

    Typically the input to CC1190 will be between +5 dBm and +10 dBm for max output.  

  • Hi,

    Between +5 dBm and +10 dBm for max output relative to what noise floor out ?

  • As indicated in my previous answer, we have never looked at NF in TX since the signal levels are much higher than the noise level in the amplifier. 

    I have never seen NF used for a PA, could you show how NF is relevant in TX? 

  • To be sure that my project is standing with transmitting local standards, and regulations, there is need of course to understand, at least, the output noise floor.

    In case that there is no noise floor out for this device, Noise figure parameter for the IC Tx chain, will be useful. 

    maybe that TI technical support can find this NF/noise floor from older calculators for this CC1190 device.

    Or maybe that this information like noise floor, is unite for all TI Integrated Circuit RF devices ?

    As a TI support group, maybe you have lab services and match equipment that can test and indicate for such parameters.

    BR. 

  • I have done a fair amount of measurements on boards with a CC1190 against both ETSI and FCC and typically the main issue for these measurements are harmonics. Why are you worried that a output noise floor will impact passing FCC/ ETSI? This has never been a topic before and this product has been out some years. 

  • What is the requirement for the PA out impedance matching? and how is this requirement impact regards to another parameters like current consumption ?

  • Could you elaborate what you mean by requirements here? 

    For this device it's strongly recommended to follow the ref design.