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DAC3282 x1 Interpolation power consumption

TIguru
Expert 1430 points
Other Parts Discussed in Thread: DAC3482, DAC3282

This is really a two-progued question:

1. Can TI's DAC3482 be used in 1x interpolation and achieve a sample rate of 528Msps?

2.  What is the power consumption for the device in 1x interpolation mode?  All of the power parameters in the datasheet are given for 2x interpolation and in figures 37 through 41 there is no plot fo 1x mode.

 

In advance, thank you for your help.

 

~tg

  • 0
    TI__Guru* 78264 points

    Hello TIguru,

    1. For the DAC3482, the maximum input data is 625MSPS for 16bit LVDS input mode. Therefore, you can use 1x interpolation and sample rate of 528MSPS with 16bit LVDS input mode. 

    The maximum input rate for 8bit LVDS input mode is only 312.5MSPS. Therefore, your maximum sample rate is limited by the input sample rate in this mode. Also, since the DAC3282 also has the same 8bit interface, the sample rate at 1x interpolation is also limited to 312.5MSPS.

    2. The power consumption for 1x interpolation is shown on Figure37 and Figure38 of the datasheet. Since the power consumption are fairly close among the different interpolations, part of the 1x interpolation curve is hiding underneath the curves for other interpolations (between 8x and 16x interpolation). 

    -KH