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About EVM of DAC5681Z

Satoshi
Guru 19645 points
Other Parts Discussed in Thread: DAC5681ZEVM, DAC5681Z, DAC5687, DAC5688

Please let me know two points below about a setup in case DAC5681ZEVM estimates.

・Is there any application note in the case of using in combination with TSW1400EVM?

・Can TSW3100EVM be ordered?

Best regards,

Satoshi

  • 0
    Guru 19645 points

    How is a situation about a question the other day?

    Although TSW3100EVM is Active in TI-web, but it is obsolute on the order page for TIJ distributor.

    Which is right?

    Is the direction of TSW1400EVM recommended?

    Best regards,

    Satoshi

  • 0 in reply to Satoshi
    TI__Genius 17340 points

    Hi Satoshi,

    The TSW1400 is the preferred pattern generator for the DAC5681z. this DAC is fully supported by the TSW1400.

    Regards,

    Matt Guibord

  • 0 in reply to Matt Guibord
    Guru 19645 points

    Dear Matt Guibord-san

    Thank you for reply.

    Can DAC5681Z evaluate the following specifications?

    ---------------------------------------------------------------------------

    ・The kind of signal to measure

    　⇒CW(Continuous wave), Pulsed-CW, Chirp-signal

    ・Generate 150MHz(IF).

    ・Bandwidth:50MHz

    ・DAC sampling frequency:200MHz. 　 　

    　Interpolation is 1x2 Hipass mode.

    ---------------------------------------------------------------------------

    If DAC5681Z cannot evaluate the above-mentioned spec,

    can DAC5687 and DAC5688 be evaluate the above-mentioned spec?

    Best regards,

    Satoshi

  • 0 in reply to Satoshi
    Guru 19645 points

    As for the content on which it questioned the other day, how about the situation?

    Please teach if there are specs and information necessary to answer.

    I will confirm it.

     

    Best regards,

    Satoshi

  • 0 in reply to Satoshi
    TI__Genius 17340 points

    Hi Satoshi,

    I'm assuming "DAC sampling frequency" means the input rate, thus the DAC output rate in 1x2 HP mode would be 400 Msps. If so, then yes, you can use 1x2 HP mode to take a 200 Msps input signal, interpolate up to 400 Msps, and output a signal from 125 MHz to 175 MHz. Note that the DAC image will sit at 225 MHz which would need to be filtered out in the final application.

    Regards,
    Matt Guibord

  • 0 in reply to Matt Guibord
    Guru 19645 points

    Dear Matt Guibord-san

    Thank you for reply.

    If the frequency is matched, can all kinds of the signal be used?
    (CW(Continuous wave), Pulsed-CW, Chirp-signal)

    Best regards,

    Satoshi

  • 0 in reply to Satoshi
    TI__Genius 17340 points

    Hi Satoshi-san,

    The DAC doesn't place any limits on the type of signals that are used. The only concern would be a true pulse output while using interpolation if a sharp edge is desired. The interpolation filter will "smooth" the edge of the pulse because it will band limit the signal due to the interpolation filters. For any signal that is already band limited, the interpolation filter will have no effect. Otherwise, 1x interpolation would need to be used, requiring a higher data rate.

    Regards,
    Matt Guibord