Product details


Type Redriver Number of channels (#) 8 Input compatibility AC-coupling, CML Speed (Max) (Gbps) 10.3 Protocols 10G-SR/LR, 10G-KR, 40G-SR4/LR4, 40G-KR4, Infiniband, Fibre Channel, CPRI, OBSAI, Interlaken, sRIO, General purpose Operating temperature range (C) -40 to 85 open-in-new Find other Ethernet retimers, redrivers & mux-buffers

Package | Pins | Size

WQFN (NJY) 54 55 mm² 10 x 5.5 open-in-new Find other Ethernet retimers, redrivers & mux-buffers


  • Comprehensive Product Family:
    • DS125BR820: 8-Channel Repeater
    • DS125BR401A: 4x Lane Repeater
    • DS125BR111: 1x Lane Repeater
  • Transparent Management of 10G-KR (802.3ap)
    Link Training Protocol
  • 65 mW/Channel (Typical) Power Consumption
  • Advanced Signal Conditioning Features
    • Receive Equalization up to 36 dB at 5 GHz
    • Transmit De-emphasis up to –12 dB
    • Transmit Voltage Control: 700 mV to 1300 mV
  • Programmable Through Pin Selection, EEPROM
    or SMBus Interface
  • Selectable 2.5-V or 3.3-V Supply Voltage
  • –40°C to +85°C Operating Temperature Range
  • Flow-thru Pinout in Leadless WQFN Package
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The DS100KR800 device is a high performance repeater designed to support 8-channel (unidirectional), 10G-KR, and other high-speed interface serial protocols up to 10.3 Gbps. The continuous time linear equalizer (CTLE) of the receiver provides a boost of up to 36 dB at 5 GHz (10.3125 Gbps) in each of its eight channels. This equalizer is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as long backplanes or cables. The transmitter provides a de-emphasis boost of up to –12 dB and output voltage amplitude control from 700 mV to 1300 mV.

When operating in 10G-KR mode, the DS100KR800 transparently allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients as defined in the 802.3ap standard. This seamless management of the link training protocol ensures system level interoperability with minimum latency.

The programmable settings can be applied through pin settings, SMBus (I2C) protocol or an external EEPROM. When operating in the EEPROM mode, the configuration information is automatically loaded on power-up. This eliminates the need for an external microprocessor or software driver.

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Technical documentation

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Type Title Date
* Data sheet DS100KR800 8-Channel Repeater for Data-Rates Up to 10.3 Gbps datasheet (Rev. E) Nov. 30, 2015
Application note Extend reach with Ethernet Redrivers and Retimers for 10G-12.5G Applications May 15, 2020
Application note Understanding EEPROM Programming for High Speed Repeaters and Mux Buffers Oct. 09, 2014
User guide DS100KR800EVK User's Guide 4 Channels SMA Evaluation Kit Oct. 17, 2013

Design & development

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Hardware development

document-generic User guide

The DS100KR800EVK evaluation board allows the user to examine the signal conditioning capabilities of the DS100KR800 device using SMAs. The board offers simple pin configuration settings that allows the user to optimize the signal conditioning settings.

Design tools & simulation

SNLM143.PDF (25 KB) - IBIS Model
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide

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WQFN (NJY) 54 View options

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