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Altera_Forum's avatar
Altera_Forum
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15 years ago

Want a daughter card with DC signals

Hey guys,

I am searching for a ADA daughter card for my cyclone 3 dev board. Particularly I want it to be able to capture DC analog input and generate DC analog ouput, because I am going to use it for a control system. Originally I got one from Terasic, but soon I found that it has transformers on board which disable its DC capability. I have been searching a lot but could not find any with such kind of capability. Has anyone here seen such kind of daughter cards? Thanks a lot

Best,

Xuemeng

5 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    --- Quote Start ---

    Hey guys,

    I am searching for a ADA daughter card for my cyclone 3 dev board. Particularly I want it to be able to capture DC analog input and generate DC analog ouput, because I am going to use it for a control system. Originally I got one from Terasic, but soon I found that it has transformers on board which disable its DC capability. I have been searching a lot but could not find any with such kind of capability. Has anyone here seen such kind of daughter cards? Thanks a lot

    Best,

    Xuemeng

    --- Quote End ---

    Actually, I have the same problem. I am looking for a board which is capable to deal with low frequency signals for the control system.

    Did you already get what you wanted?

    If yes, would you please give me some hint?

    Many many thanks.

    Juan Ren
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    I found one on 4dsp.com which has a DC version for one of its daughter card AD250. But they will charge for $1700 for each with merely 2 channels of ADCs and DACs. If you are interested, you can send an email to Pierrick(pierrick.vulliez@4dsp.com).

    Best,

    Xuemeng
  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    I've made a daughtercard for the DE0 board with 8 channel in 2 channel out analog (along with a motor driver and PSP display interface). It's still in the prototype stage (slated to be used in a university course in the fall), so I couldn't sell or give one away at this point, but I would gladly field questions on the design. It's really quite a simple thing, and yes all the existing daughtercards are horrendously overpriced.

  • Altera_Forum's avatar
    Altera_Forum
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    15 years ago

    Considering the time consumed in making a daughter card, it may be a good choice to buy one if it's just around 1000 bucks. We are just gonna to use it for our research... Anyway, if your daughter card finally works, I am very interested. Can you tell me more details about you daughtercard?

    Best,

    Xuemeng