Product details

Type Retimer Mux Number of channels (#) 4 Input compatibility AC-coupling, CML Speed (Max) (Gbps) 25.8 Protocols IEEE802.3bj, 100GbE, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR, QSFP28, CFP2/CFP4, CDFP Operating temperature range (C) -40 to 85
Type Retimer Mux Number of channels (#) 4 Input compatibility AC-coupling, CML Speed (Max) (Gbps) 25.8 Protocols IEEE802.3bj, 100GbE, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR, QSFP28, CFP2/CFP4, CDFP Operating temperature range (C) -40 to 85
FCCSP (ABM) 101 36 mm² 6 x 6
  • 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 25.78125-Gbps 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
  • 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 25.78125-Gbps 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

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-impaired high-speed serial links while achieving a bit error rate (BER) of 10-15 or less.

Each channel of the DS250DF410 independently locks to serial data rates in a continuous range from 20.2752 Gbps to 25.8 Gbps or to any supported sub-rate (÷2 and ÷4), including key data rates such as 10.3125 Gbps and 12.5 Gbps, which allows the DS250DF410 to support individual lane Forward Error Correction (FEC) pass-through.

The DS250DF410 has a single power supply and minimal need for external components. These features reduce PCB routing complexity and BOM cost.

The advanced equalization features of the DS250DF410 include a low-jitter 3-tap transmit finite impulse response (FIR) filter, an adaptive continuous-time linear equalizer (CTLE), and an adaptive decision feedback equalizer (DFE). This enables reach extension for lossy interconnect and backplanes with multiple connectors and crosstalk. The integrated CDR function is ideal for front-port optical module applications to reset the jitter budget and retime the high-speed serial data. The DS250DF410 implements 2x2 cross-point on each channel pair, providing the host with lane crossing, fanout, and multiplexing options.

The DS250DF410 can be configured either through the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM using Common Channel format. A non-disruptive on-chip eye monitor and a PRBS generator/checker allow for in-system diagnostics.

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-impaired high-speed serial links while achieving a bit error rate (BER) of 10-15 or less.

Each channel of the DS250DF410 independently locks to serial data rates in a continuous range from 20.2752 Gbps to 25.8 Gbps or to any supported sub-rate (÷2 and ÷4), including key data rates such as 10.3125 Gbps and 12.5 Gbps, which allows the DS250DF410 to support individual lane Forward Error Correction (FEC) pass-through.

The DS250DF410 has a single power supply and minimal need for external components. These features reduce PCB routing complexity and BOM cost.

The advanced equalization features of the DS250DF410 include a low-jitter 3-tap transmit finite impulse response (FIR) filter, an adaptive continuous-time linear equalizer (CTLE), and an adaptive decision feedback equalizer (DFE). This enables reach extension for lossy interconnect and backplanes with multiple connectors and crosstalk. The integrated CDR function is ideal for front-port optical module applications to reset the jitter budget and retime the high-speed serial data. The DS250DF410 implements 2x2 cross-point on each channel pair, providing the host with lane crossing, fanout, and multiplexing options.

The DS250DF410 can be configured either through the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM using Common Channel format. A non-disruptive on-chip eye monitor and a PRBS generator/checker allow for in-system diagnostics.

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Special note

To request IBIS AMI models, and device GUI profile: Request DS250DF410

Technical documentation

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Type Title Date
* Data sheet DS250DF410 25 Gbps Multi-Rate 4-Channel Retimer datasheet (Rev. D) PDF | HTML 24 Oct 2019
Application note Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. A) 07 Jan 2020
EVM User's guide DS250DF410EVM User's Guide (Rev. A) 03 Sep 2019
More literature Advanced Signal Conditioning Made Easy and Efficient 12 Jan 2017
Analog Design Journal Green box testing: A method for optimizing high-speed serial links 21 Jul 2016
Application note Understanding EEPROM Programming for 25G and 28G Repeaters and Retimers 13 Jan 2016

Design & development

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Evaluation board

DS250DF410EVM — DS250DF410 25 Gbps Multi-Rate 4-Channel Retimer Evaluation Module

The DS250DF410EVM allows for easy evaluation of the 25 Gbps retimer DS250DF410. Users are required to supply power and high speed traffic to the EVM via Huber+Suhner 1x8 MXP connectors. Huber+Suhner cables are not included.

Through the onboard USB2ANY connection and EVM software, users can evaluate (...)

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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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