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WEBENCH® Tools/LMX2592EVM: LMX2592

HSIAO CHINGYEN
Prodigy 20 points
Part Number: LMX2592EVM
Other Parts Discussed in Thread: LMX2592, PLLATINUMSIM-SW

Tool/software: WEBENCH® Design Tools

About  LMX2592 EVM at 9.5GHz test data ,like  Max. output power , phase noise curve , current consumption  ....etc.

 

  • 0
    TI__Mastermind 27581 points
    Hsaio,

    Here's what we have:
    1. Output power. Figure 12 in datasheet shows 1 dBm
    2. Phase Noise curve. Figure 7 in datasheet shows narrowband noise at 9.8 GHz. Also try our PLLatinum Sim software at ti.com/tool/PLLATINUMSIM-SW that can simulate the phase noise in depth.
    3. Current consumption. Base current consumption is 250 mA for one output. Table 50 in datasheet gives more details, specifically doubler adds 16 mA, so this shoudl be about 266 mA.

    Regards,
    Dean
  • 0 in reply to Dean Banerjee
    Prodigy 20 points
    Hi Dean ,
    Thank you for your reply ,
    1 question my measurement result of 9.5GHz about 0 dBm , current consumption is 3.3V 355 mA , bigger than 266 mA ,something wrong ?

    CY
  • 0 in reply to HSIAO CHINGYEN
    TI__Mastermind 27581 points
    Hsaio,

    Output power has substantial losses at 9.8 GHz through components, board traces, and SMA connector. So 0 dBm does not surprise me. You could get higher using better quality RF pull-up resistors, AC coupling capacitors, and SMA connectors.

    355 mA sounds like you have a few things on. For instance, perhaps you have two outptus on and also maybe if you are measuring the EVM, this includes the current for the XO.

    Regards,
    Dean