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100Mhz Data Acquisition

Discussion in 'Electronic Basics' started by [email protected], Apr 28, 2006.

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  1. Guest

    We are seeking a compact/low-power Data Acquisition device for
    deployment in small sub ocean devices. We need to sample 10Mhz pulses
    at better than 10 samples per pulse (e.g. ~ 100Mhz). The pulses arrive
    at around 10mV.
    At the moment we are using a rather large and cumbersome National
    Instruments device. This works fairly well but is not compact or low
    power (>30watts would be nice)

    Does anyone have experience with a DAQ device that might meet our
    specs. I am emailing a few vendors at this time as well

    Thanks,
    Fritz
     
  2. Phil Allison

    Phil Allison Guest


    ** Despite the implausibility of this post it arrives from the :


    Woods Hole Oceanographic Institution
    OrgID: WHOI
    Address: 266 Woods Hole Road
    City: Woods Hole
    StateProv: MA
    PostalCode: 02543
    Country: US



    ** What the heck generates 10MHz pulses under water ??

    Dolphins using CB ???





    ......... Phil
     
  3. Phil Allison

    Phil Allison Guest

    "Phil Allison"


    ** This is our OP - complete with cute pic:

    Frederick N. Sonnichsen

    http://www.whoi.edu/scitechdir/staff.go?id=355


    He works for:

    http://www.whoi.edu/



    Serious stuff .......




    ........ Phil
     
  4. Guest

    VHF Tunicates?
    Naaaaaahhhh- seriously we are modulating a 10Mbs
    ethernet transmitter using bright LEDs. I want to do some DSP and noise
    analysis. We are using a nice "neutrino detector" PMT the size of a
    basketball for a receiver.

    We will deply below the ocean photosphere, beyond 1000 meters where it
    is very dark. Typically we lilke to can up things in a Ti cylinder and
    operate from batteries. Compactness, Power consumption, and Thermal
    output are everything to us in Oceanography.

    Cheers,
    Fritz
     
  5. Phil Allison

    Phil Allison Guest


    ** You are on the WRONG newsgroup - Fritz.

    There is nothing BASIC about your activity or question.

    Try posting on " sci.electronics.design " instead.




    .......... Phil
     
  6. Joerg

    Joerg Guest

    Hello Fritz,

    If you intend to do a circuit board look at the TI converter ADS5500.
    14bits at 125MHz. That, plus a nice gain controlled preamp such as an
    AD603 (Analog Devices) might be the ticket and it will be a lot lower in
    power consumption than 30W.

    Regards, Joerg
     
  7. Guest

    OK and thanks Joerg. I looked at the sheets for the ADS5500 -looks like
    a good low power option-Also I really like the fact that they have an
    eval board. The price is reasonable so I'll check it out-

    Per Phil's comment I'll post in the "design" board next time-tough to
    know where 'basic" begins and ends these days with all the technology
    out there, especially for a guy that started on vacuum tubes

    Cheers All and Thanks,
    Fritz
     
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