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Current steering DAC evaluation board

Shantanu Mehta
Prodigy 20 points
Other Parts Discussed in Thread: DAC5681, DAC5681EVM

I am esearcher from Ireland.

I would like to get support on products from TI.

I am looking for a 12-bit Current Steering DAC on an evaluation board with sampling frequency around 10-100 MHz

The DAC should be segmented 5:7 segmentation Nyquist rate

I would like to interface our digital solution implemented onto Xilinx FPGA board through FMC connector to MSB 5-bit DAC and have to take the measurement results for an overall 12-bit DAC

The DAC can take input as a 1.8V i.e. representing 1

We are looking for a single channel if there are two channels will be fine

  • 0
    TI__Guru* 91947 points

    Shantanu,

    I think you best bet would be to use the DAC5681 device. The DAC5681EVM does not have an FMC connector, but TI sells a HSMC-to-FMC adapter that would allow the DAC board to be used with a FMC connector. Before purchasing these though, I would make sure the routing from the DAC to the FPGA you are using is in place. I have attached the schematics for both boards for your reference.

    Not sure what you mean by "MSB 5-bit DAC" and "the DAC can take input as a 1.8V i.e. representing 1".

    Regards,

    Jim

    2465.FMC-DAC-ADAPTER_D_SCH.pdfDAC5681_81Z_82Z-SCH_D.pdf

  • 0 in reply to jim s
    Prodigy 20 points

    Hi Jim,

    Thanks for your reply. Here the diagram below for my measurement set up. I need to test 5 MSB thermometer decoded DAC using our digital solution. I need to activate 32 DAC elements of the MSB DAC in a pseudo-random fashion and measure the analog output. The I/O pads of the DAC should accept 1.8 V because the I/O pins on FPGA board operates on 1.8 V supply. 

    Do you still think the board you suggested is suitable for this project?

    Regards,

    Shantanu

  • 0 in reply to Shantanu Mehta
    TI__Guru* 91947 points

    Shantanu,

    The diagram did not get attached. The DAC inputs are LVDS. See page 9 of the data sheet for voltage specifications.

    Regards,

    Jim