ZHCSD34B November 2014 – August 2019 DS90UB949-Q1
PRODUCTION DATA.
The SER/DES supports only AC-coupled interconnects through an integrated DC-balanced decoding scheme. External AC-coupling capacitors must be placed in series in the FPD-Link III signal path as shown in Figure 28.
DESIGN PARAMETER | EXAMPLE VALUE |
---|---|
VDDIO | 1.8 V |
AC-Coupling Capacitor for DOUT0± and DOUT1± with 92x deserializers | 100 nF |
AC-Coupling Capacitor for DOUT0± and DOUT1± with 94x deserializers | 33 nF |
For applications using single-ended 50-Ω coaxial cable, the unused data pins (DOUT0-, DOUT1-) should use a 15-nF capacitor and should be terminated with a 50-Ω resistor.
For high-speed FPD–Link III transmissions, the smallest available package should be used for the AC-coupling capacitor. This will help minimize degradation of signal quality due to package parasitics.