Question about ADCLK905

Hello,

I am thinking of using the ADCLK905 as a clock buffer for ADF4106 (using a 10 MHz reference), but I have a few questions:

- Is needed any specifical waveform at the ADCLK905 input (sine, square..)? In page 9 of the datasheet appear some figure of the output waveform but I do not know if this waveform is dependent or not of the input waveform. 

- Is the output level constant or it depends of the input level? I mean, the output level will be the same if the input is a 0.3Vpp or a 1.5Vpp signal?

Thank you very much,

Alberto

  • 0
    •  Analog Employees 
    on Apr 25, 2017 9:57 AM

    Hello Alberto,

    > I am thinking of using the ADCLK905 as a clock buffer for ADF4106 (using a 10 MHz reference),

    > but I have a few questions:

    > - Is needed any specifical waveform at the ADCLK905 input (sine, square..)?

    Either is ok, but square is desirable.

    > In page 9 of the datasheet appear some figure of the output waveform

    >but I do not know if this waveform is dependent or not of the input waveform.

     

    The output clock waveform won't look different, but the additive phase noise of the buffer will be greater if a sine wave is used. The poor input slew rate has more time uncertainty in the zero crossing of the input clock.

    > - Is the output level constant or it depends of the input level? I mean, the output level will be the same if the input is a 0.3Vpp or a 1.5Vpp signal?

    Yes.