ZHCSKE8D March 2016 – October 2019 DS250DF410
PRODUCTION DATA.
For this design example, the following guidelines outlined in Table 15 apply.
DESIGN PARAMETER | REQUIREMENT |
---|---|
AC coupling capacitors | AC coupling capacitors in the range of 100 to 220 nF are required for the RX inputs and TX outputs. |
Input channel insertion loss | ≤ 35 dB at 25.78125 Gbps Nyquist frequency (12.9 GHz) |
Output channel insertion loss | Depends on downstream ASIC / FPGA capabilities. The DS250DF410 has a low-jitter output driver with 3-tap FIR filter for equalizing a portion of the output channel. |
Link partner TX launch amplitude | 800 mVppd to 1200 mVppd |
Link partner TX FIR filter | Depends on channel loss. Refer to Setting the Output VOD, Pre-Cursor, and Post-Cursor Equalization. |