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Forum Evaluation Board for HMCAD1511 -- Interfacing with Spartan 7 SP 701 Evaluation Board
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  • Replies 3 replies
  • Subscribers 42 subscribers
  • Views 1714 views
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  • spartan 7
  • sp 701
  • hmac1511
  • adc interface with xilinx 7 series
  • xapp 524
Related

Evaluation Board for HMCAD1511 -- Interfacing with Spartan 7 SP 701 Evaluation Board

arneldcollins
arneldcollins over 3 years ago

Hi,

 

I am beset with a range of problems with a new design I am starting, which is to interface a HMCAD 1511 ADC with a Spartan 7 SP 701 Evaluation Board. Hopefully someone will be be able to help me make some sense of this.

 

I have read through the Xilinx APP, XAPP524. I propose using the HMCAD 1511 in single channel mode.  Single channel mode (Fs = 1000 MSPs) requires a bit rate clock of 500 MHZ DDR. Or does it? Is this any different from dual and quad modes where according to https://www.analog.com/media/en/technical-documentation/data-sheets/hmcad1511.pdf  Figures 4 through 6 it is obvious the bit clock remains the same while the input *** varies? From the point of view of interleaving then what advantage does this confer anyway if the bit clock rate reamins at 500 MHZ?As far as I can see it is just that more of the output channels have to be utilized as the sample clock increases but I would like to be enlightened.

 

The other confusing item is that XAPP524 makes reference to 1 wire mode and 2 wire mode. Would the HMCAD 1511 not correspond to 1 wire mode since there is apparently no let in bit clock rate as sampling frequency is relaxed? According to the calculation of XZPP524, for 8 bit, 1000 Ms/s, 1 wire ADC, the DDR bit clock is 4,000 MHZ, making this topology not feasible for the 7 series FPGAs.

 

Thanks if someone can share some insight into the above or describe if (s)he was successfully able to implement single channel mode with XAPP524 in a Spartan 7 FPGA.

 

Arnel 

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Top Replies

  • michaelkellett
    michaelkellett over 3 years ago +1
    The AD HMCAD1511 HMCAD1511 board expects to work with a Spartan 6 SP601 board so I would be surprised if it won't work with a Spartan 7. If you study the published documents for the standard (Spartan6…
  • michaelkellett
    michaelkellett over 3 years ago

    The AD HMCAD1511HMCAD1511 board expects to work with a Spartan 6 SP601 board so I would be surprised if it won't work with a Spartan 7.

    If you study the published documents for the standard (Spartan6) solution this should get you a long way towards understanding how it all works. It might be worth buying the boards an getting the demo running.

     

    Are you planning to design your own board  -  if so the cost of buying the eval broads will be lost in the noise.

     

    MK

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  • maggiebahlmann50
    maggiebahlmann50 over 1 year ago in reply to michaelkellett

    I want to buy it. Send me information and we can make a arainsmant. Maggie. E- mail is maggiebahlmann50@gmail.com. I stay in  South Africa

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  • michaelkellett
    michaelkellett over 1 year ago in reply to maggiebahlmann50

    What is it that you wish to buy ?

     

    MK

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