请问是否有并行ADC或并行DAC接口卡让我能够使用FX2 FMC连接器连接到FPGA板？

如果您只是在寻找芯片，可以尝试使用Farnell或类似供应商的搜索页面。
它们通常具有一些过滤功能，可以让您准确搜索所需内容。
http://uk.farnell.com/analog-to-digital-converters-adc
找到具有您的特殊要求的预制板可能并不容易。
另外，您需要并行接口的任何特殊原因？
编写一些VHDL或Verilog与SPI或类似接口并不难...



以下为原文

If you're just looking for the chip, you could try using the search page of for instance Farnell or a similar supplier. They usually have some filtering functions that'll allow you to search for exactly what you need.
 
http://uk.farnell.com/analog-to-digital-converters-adc
 
Finding a premade-board with such specific requirements as yours may  not be easy though. Also, any particular reason you need a parallel interface? It's not that hard to write a bit of VHDL or Verilog to interface to SPI or similar...

谢谢 
我知道farnell.com可以用来搜索adc或dac IC。
但最好是拥有一块具有自己的DC或DAC的接口以及与特定FPGA板一起使用的接口。 
我想使用高速（快速转换速率和低建立时间），低噪声（高SNR，SFDR），低DNL和INL，高采样率50,65或80-100,105,125 MSPS ADC和DAC。
这就是为什么我不想处理SPI，我认为并行接口会更快。
此外，ADC和DAC在数据表上有自己的评估模块，但它们在布局中有4层或5层。
然而，在土耳其和我的大学里，这并不容易。
有什么建议请..
谢谢
HIDIR



以下为原文

Thank you
  I know farnell.com can be used to search about the adc or dac ICs. But it would be better to have a board which has its own DC or DAC and interface to be used with specific FPGA boards.
  I want to use a high speed (fast conversion rate and low settling time), low noise(high SNR,SFDR), low DNL and INL , high sampling rate 50,65 or 80 - 100, 105, 125 MSPS ADC and DAC. That is why I don't want to deal with SPI, I think parallel interface will be faster.
Also the ADC and DACs have their own evaluation modules on the datasheets but they have 4 or 5 layers in the layout. However it is not easy in Turkey and in my university.
 
Any suggestions please ..
 
Thanks
 
HIDIR

啊，我显然错过了16 MSPS要求 - 然后并行接口才有意义;）
我不太喜欢电路板设计，但应该可以将您需要的东西放到双面PCB上（没有内部层），尽管它可能不是最佳布局。
否则，有些公司可以为您生产多层PCB，而不会非常昂贵 - 如果您找不到包含您需要的预制板。



以下为原文

Ah, I apparently missed the 16 MSPS requirement - a parallel interface makes sense then ;)
 
I'm not much into board design, but it should be possible to fit what you need onto a dual-sided PCB (without internal layers), although it might not be an optimal layout. Otherwise, there are companies that can produce the multi-layered PCBs for you, without it being terribly expensive - if you can't find a premade board containing what you need.

我决定制作自己的外部ADC和DAC卡，它们适合通过适当的连接器连接到FPGA。
假设ADC和DAC各为14位，哪种连接最好通过hirose FX2扩展连接器的LVDS用作spartan 3AN FPGA的输入或输出？
有什么建议吗？
谢谢



以下为原文

I decided to make my own external ADC and DAC cards which are suitable to connect to FPGA by proper connctors.
Supposing the ADC and DAC are 14 bits each , which connection is better to use as an input to or an output to spartan 3AN FPGA via  LVDS of hirose FX2 extension connector ?
 
Any suggestion please ?
 
Thanks

我们一直使用Digilent Nexys2板的FX2连接器读取VGA信号。
也就是说，50 MHz采样率，同时在三个10位并行ADC上，只有单端信号......工作得很好...... :)



以下为原文

We have been using the FX2 connector of a Digilent Nexys2 board to read in a VGA signal. That is, a 50 MHz sampling rate, on three 10-bit parallel ADCs simultaneously, and just with single-ended signals... Works just fine...:)

有关与ucf对应的FX2扩展连接器的引脚名称的任何想法？
我如何知道在布局规划中需要将14个引脚中的哪一个定义为ADC输出或FPGA输入？
谢谢
HIDIR



以下为原文

Any idea about the pin names of the FX2 expansion connector corresponding to ucf ? How will I know which of 14 pins are that I need to define in my floorplan as an ADC output or FPGA input ?
 
Thanks
 HIDIR

有关FX2扩展连接器的引脚名称的任何想法
对应ucf？
我怎么知道我需要的14个引脚中的哪一个
在我的布局规划中定义为ADC输出或FPGA输入？
如果您有Spartan-3an电路板的原理图和附加ADC板的原理图，那就是您所需要的 - 假设两个原理图的作者都同意FX2连接器的引脚编号:)
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
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以下为原文

Any idea about the pin names of the FX2 expansion connector corresponding to ucf ? How will I know which of 14 pins are that I need to define in my floorplan as an ADC output or FPGA input ?

If you have the schematics for the Spartan-3an board and the schematics for the add-on ADC board, that is all you need  -- assuming that the authors of both schematics agreed on the pin numbering of the FX2 connectors :)
 
-- Bob Elkind
SIGNATURE:
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Summary:
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2. Search the forums (and search the web) for similar topics.
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是的ug330.pdf Spartan-3A FPGA入门工具包电路板用户指南第125页扩展部分给出了连接器引脚和FPGA连接。
谢谢
但我希望他们是差异的:)
LVDS Tx和Rx仅适用于5对。
谢谢



以下为原文

Yes in ug330.pdf  Spartan-3A FPGA Starter Kit Board User Guide page 125 Connector Pinout and FPGA Connections are given for the expansion part. Thanks
But i wish they were differential :)
LVDS Tx and Rx  are  just for 5 pairs .
 
Thanks

但我希望他们是差别的
要点：
1.没有什么可以阻止你使用两个非差分信号连接作为差分对 - 但可能是个坏主意
2.适当的差分对在电路板上布线，匹配非常紧密
3.适当的差分对使用选择用于匹配特性（延迟，阻抗）的连接器引脚
4.适当的输入差分对选择FPGA引脚，指定为单个差分对
- 鲍勃埃尔金德
签名：新手的自述文件在这里：http：//forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369总结：1。
阅读手册或用户指南。
你读过手册了吗？
你能找到手册吗？2。
搜索论坛（并搜索网页）以寻找类似的主题。
不要在多个论坛上发布相同的问题。
不要在别人的主题上发布新主题或问题，开始新的主题！5。
学生：复制代码与学习设计不同.6“它不起作用”不是一个可以回答的问题。
提供有用的详细信息（请与网页，数据表链接）.7。
您的代码中的评论不需要支付额外费用。
我没有支付论坛帖子的费用。
如果我写一篇好文章，那么我一无所获。



以下为原文

But i wish they were differential

Some points to make:
1.  Nothing stops you from using two non-differential signal connections as a differential pair - but may be a bad idea
2.  A proper diff pair is routed on circuit board with very tight matching
3.  A proper diff pair uses connector pins selected for matched characteristics (delay, impedance)
4.  A proper input diff pair select FPGA pins designated as a single diff pair
 
- Bob Elkind
SIGNATURE:
README for newbies is here: http://forums.xilinx.com/t5/New-Users-Forum/README-first-Help-for-new-users/td-p/219369

Summary:
1. Read the manual or user guide.  Have you read the manual? Can you find the manual?
2. Search the forums (and search the web) for similar topics.
3. Do not post the same question on multiple forums.
4. Do not post a new topic or question on someone else's thread, start a new thread!
5. Students: Copying code is not the same as learning to design.
6 "It does not work" is not a question which can be answered. Provide useful details (with webpage, datasheet links, please).
7. You are not charged extra fees for comments in your code.
8. I am not paid for forum posts.  If I write a good post, then I have been good for nothing.