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ADC08D1020: Isolating VA and VDR supply pins

Gregory Duperon
Expert 6980 points
Part Number: ADC08D1020
Other Parts Discussed in Thread: ADC08D1520

In the datasheet for ADC08D1020, it is recommended to use a ferrite choke (Miller FB20009-3B) to isolate the Va and Vdr from the 1.9V power supply.

Looking at the reference board for ADC08D1520, no ferrite choke is used.

Is the ferrite choke absolutely necessary for ADC08D1020?

If so, are there any smaller ferrite chokes that can be used?

  • 0
    TI__Mastermind 31590 points

    Hi Greg,

    The choke isn’t really necessary. Most of the boards for the ADC1XDXXXX 10/12 bit LVDS output devices do not have any choke between the different 1.9V supplies.

    Regards,

    Rob