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DS80PCI800: about data bus trace length

ACGUY
Guru 11170 points
Part Number: DS80PCI800
Other Parts Discussed in Thread: DS80PCI810

Hello E2E,

Does DS80PCI800 have the regulation for data bus trace max and min length?

Regads,

ACGUY

  • 0
    TI__Mastermind 43795 points

    Hi,

    For the DS80PCI800 it is recommended to have 50-75% of the total channel length (attenuation) located on the DS80PCI800 input side.  The remaining 25-50% on the output side.

    The DS80PCI810 has better linearity so it can be effective even when placed closer to the PCIe system TX pins.

    For the DS80PCI810 it is recommended to have a minimum of 33% of the total channel length on the DS80PCI810 input side.

    Regards,

    Lee

  • 0 in reply to Lee Sledjeski
    Guru 11170 points

    Hello Lee,
    Can this device communicate with data bus length less than 1-inch?

    I understand that the data bus length depends on the insertion loss of that route.
    If TI conducted experiments with the shortest line length, I would like to know the conditions and results.

    Regards,
    ACGUY

  • 0 in reply to ACGUY
    TI__Guru* 93670 points
    Hi ACGUY,

    Device hasn't been tested under this condition. From SMA to the device is about 2-4 inches.

    Regards,,nasser