9.2.2 Active Cable Applications

The DS250DF410 has strong equalization capabilities that allow it to recover data over long and/or thin-gauge copper cables. A single DS250DF410 can be used on a QSFP28 paddle card to create a half-active cable assembly which is longer and/or thinner than passive cables. Alternatively, two DS250DF410 devices can be used on a QSFP28 paddle card to create a full-active cable assembly and achieve even longer reach and/or thinner cables.

Figure 20 illustrates these configurations, Figure 21 shows an example simplified schematic for a half-active cable application, and Figure 22 shows an example simplified schematic for a full-active cable application.

Figure 20. Active Cable Application Block Diagram

Figure 21. Half-Active Cable Application Schematic

Figure 22. Full-Active Cable Application Schematic