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CDCM7005 Evaluation Modules

Amber Krummel
Prodigy 80 points
Other Parts Discussed in Thread: CDC7005, CDCE62005, CDCM7005

Hi,

I would like to know the differences between the following three evaluation modules:

CDC7005 Evaluation Module 


CDC7005 QFN Package Evaluation Module 

 
CDCM7005 BGA Package Evaluation Module 

In my application I need to use an 88MHz reference signal to produce a 300MHz TTL signal which will subsequently act as an external clock for an arbitrary waveform generator.  Will the CDC7005 take care of my needs or is there a better solution?

Thanks,

Amber

  • 0
    Genius 4530 points

    It depends on the amount of jitter you can tolerate for your application.

    There are more clock synthesizers with jitter in the range of femtoseconds but they are obviously costlier.

    Regards,

    Sid

  • 0 in reply to Sid
    Prodigy 80 points

    Thanks, Sid. I would like to have sub-picosecond jitters.

  • 0 in reply to Amber Krummel
    Genius 4530 points

    have you checked out CDCE62005? Although CDC7005 seems a good option too.

    Are you planning to use the evaluation module to generate the clock and direct it to your board? Or you would be having an on-board clock synthesizer? If yes, why would having different packages for CDC7005 on evaluation modules be an issue?

    Regards,

    Sid

  • 0 in reply to Sid
    Prodigy 80 points

    Hi Sid,

    Thanks for directing me to the CDCE62005.  I was hoping to use the evaluation module external to the computer that houses my AWG and direct it to the AWG via an appropriate cable connection.  Considering that I don't know the functional/practical differences between these three CDCM7005 evaluation packages, I don't know that having different packages would be an issue.  I was hoping someone from TI could help with these novice questions.  Unfortunately, one can no longer just pick up the phone and speak to an applications engineer.  Anyway, if you or anyone else has suggestions or can provide information for a novice, I would certainly welcome it.

    Best regards,

    Amber

  • 0 in reply to Amber Krummel
    Genius 4530 points

    If you compare the specifications of the 3 modules, then BGA package has a higher output frequency range (upto 1.5 GHz)  while BGA and the first module has output  frequency range upto 800 MHz. Rest all specs look the same.

    Generally many BGA packages support higher specs because of the higher ball count they have.

    Obviously, someone from TI could add a  bit more info to this.

    Regards,

    Sid

  • 0 in reply to Sid
    Prodigy 80 points

    Hi Sid,

    Thanks a lot for your insight.

    Best regards,

    Amber