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Inquiry About ADCLK846 Group Delay with Single-Ended Input

Category: Datasheet/Specs
Product Number: ADCLK846
I have some questions regarding your ADCLK846 chip, specifically concerning the Group Delay related to Input Power. I am particularly interested in how the Group Delay is affected when using single-ended inputs instead of differential inputs.
 
On page 8 of the data sheet, Figures 4 and 7 illustrate the Group Delay as a function of Input Differential Voltage and Input Common-Mode Voltage, respectively. We anticipate that using a single-ended input may degrade edge transitions, leading to a worsening of the Group Delay. However, due to unavoidable circumstances, we need to operate the chip in a single-ended configuration. Could you please provide insight into how much the Group Delay might deteriorate when using the ADCLK846 with a single-ended input? Even a qualitative assessment would be greatly appreciated.
 
I look forward to your feedback.
 
  • Hi,

    Using a single-ended or a differential input to the ADCLK846 has not much effect on the propagation delay of the output. As seen on Figures 4 and 7, an input voltage level as small as 0.1Vpp and a common mode voltage as small as 200mV still has propagation delay of around 2ns.

    Best regards,
    Mark

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