DAC3484: Data rate question

Izik

Expert 1585 points

Part Number: DAC3484

Hello

I want to verify my setup, see the figure below:

DACCLK = 960MHz

DAC data rate is 240MSPS, meaning that each dac is updating at 60MSPS

DATACLK is 120MHz DDR

Interpolation is x4 (240MSPS x 4 = 960MHz)

is this setup correct?

Thanks

0 dBrock over 5 years ago

Hi Izik,

One of our device experts is looking into your question, and will be back with you soon.

Best Regards,

Dan

0 Kang Hsia over 5 years ago

Hi Izik,

No, this is not correct. Please refer to below plot for detail:

0 Izik over 5 years ago in reply to Kang Hsia

Expert 1585 points

So going back to the original plot, is the correct description is:

DACCLK = 960MHz

DAC data rate is 60MSPS, meaning that each dac is updating at 60MSPS

DATACLK is 120MHz DDR

Interpolation is x16 (60MSPS x 16 = 960MHz)

Thanks

0 Kang Hsia over 5 years ago in reply to Izik

Hi Izik,

Yes, according to the original description, the interpolation is 16x.

My drawing is based on your other description of 4x interpolation (with my assumption that you want to achieve 240MSPS of data transfer rate).

-Kang

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