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DAC

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Replies: 2

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I require DAC(Digital to Analog Converter) having following specifications:

  • Sampling Rate>15MSPS as my Signal is up to 5MHz BW.
  • Serial Interface(Due to fewer GPIOs i don't require Parallel interface)
  • SPI Control Signal(3 wire or 4 wire)
  • Resolution=16Bits
  • Signal Type: Video or normal signals

Please suggest suitable P/N for DAC.

  • Shivakant,

    We have a parametric search tool on our website which you may find helpful for this, which you can find here: http://www.ti.com/data-converters/dac-circuit/precision/products.html

    Using that tool you will find 26 16-bit, single-channel, SPI-interfaced products.

    Things get interesting concerning your sampling rate. For a DAC sampling rate can be interpreted basically either as the digital throughput capabilities of the SPI interface or the settling time capabilities of the output.

    Even the simplest 16-bit DAC will require a 16-bit frame and generally speaking our fastest SPI interfaces utilize clocks at 50MHz - which means the fastest update rate from the interface alone is 3.125MHz. So, you may be forced to consider alternative interfaces.

    The fastest device in the analog domain which also matches this simple interface I described above is the DAC8811. Perhaps take a look at that and let me know what you think.

    Kevin Duke
    DAC Applications Manager

  • In reply to Duke of DACs:

    Shivakant,

    We could also explore some other ideas with you offline if you are receptive to taking this discussion to email. If so, let me know if it would be okay to ping you at the email address which you used to register your myTI.com account.

    Kevin Duke
    DAC Applications Manager

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