25 Gbps Multi-Rate 4-Channel Retimer
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DS250DF410
SNLS456D – MARCH 2016 ...
Description
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DS250DF410
SNLS456D – MARCH 2016 – REVISED OCTOBER 2019
DS250DF410 25 Gbps Multi-Rate 4-Channel Retimer
1 Features
1 Quad-channel multi-rate retimer with integrated signal conditioning
All channels lock independently from 20.2752 to 25.8 Gbps (including sub-rates such as 10.3125 Gbps, 12.5 Gbps, and more)
Ultra-low latency: <500 ps typical for 25.78125Gbps data rate
Single power supply, no low-jitter reference clock required, and minimal supply decoupling to reduce board routing complexity and BOM cost
Integrated 2×2 cross point Adaptive continuous time linear equalizer (CTLE) Adaptive decision feedback equalizer (DFE) Low-jitter transmitter with 3-Tap FIR filter Combined equalization supporting 35+ dB channel
loss at 12.9 GHz Adjustable transmit amplitude: 205 mVppd to
1225 mVppd (Typical) On-chip eye opening monitor (EOM), PRBS
pattern checker/generator Supports JTAG/AC-JTAG boundary scan Small 6-mm × 6-mm BGA package with easy flow-
through routing
2 Applications
Jitter cleaning for front-port optical Active cable assemblies Backplane/mid-plane reach extension IEEE802.3bj 100GbE, Infiniband EDR, and OIF-
CEI-25G-LR/MR/SR/VSR electrical interfaces SFP28, QSFP28, CFP2/CFP4, CDFP
3 Description
The DS250DF410 is a four-channel multi-rate retimer with integrated signal conditioning. It is used to extend the reach and robustness of long, lossy, crosstalk-i...
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