DS92LX1621 Datasheet, PDF (38/44 Pages) National Semiconductor (TI) – 10 - 50 MHz Channel Link III Serializer and Deserializer with Embedded Bi-Directional Control Channel

Applications Information
AC COUPLING
The SER/DES supports only AC-coupled interconnects
through an integrated DC balanced decoding scheme. To use
the device in an AC-coupled application, insert external AC
coupling capacitors in series in the Channel Link III signal path
as illustrated in Figure 34.
FIGURE 34. AC-Coupled Application
30123038
For high-speed Channel Link III transmissions, the smallest
available package should be used for the AC coupling ca-
pacitor. This will help minimize degradation of signal quality
due to package parasitics. The most common used capacitor
value for the interface is 0.1μF.
TYPICAL APPLICATION CONNECTION
Figure 35 shows a typical connection of the DS92LX1621
Serializer.
37
www.national.com