Product details

Type Redriver Protocols 10G-SR/LR, CPRI, Fibre Channel, General purpose, Infiniband, Interlaken, OBSAI, PCIe1, PCIe2, PCIe3, SAS1, SAS2, SAS3, SATA1, SATA2, SATA3, sRIO Applications Front Port, Backplane, Peripheral I/O Number of channels (#) 2 Speed (Max) (Gbps) 12.5 Supply voltage (V) 3.3, 2.5 Rating Catalog Operating temperature range (C) -40 to 85
Type Redriver Protocols 10G-SR/LR, CPRI, Fibre Channel, General purpose, Infiniband, Interlaken, OBSAI, PCIe1, PCIe2, PCIe3, SAS1, SAS2, SAS3, SATA1, SATA2, SATA3, sRIO Applications Front Port, Backplane, Peripheral I/O Number of channels (#) 2 Speed (Max) (Gbps) 12.5 Supply voltage (V) 3.3, 2.5 Rating Catalog Operating temperature range (C) -40 to 85
WQFN (RTW) 24 16 mm² 4 x 4
  • Low 65 mW/Channel (typ) Power Consumption
  • Supports Link Training
  • Supports Out-of-Band (OOB) Signaling
  • Advanced Signal Conditioning I/O
    • Receive CTLE up to 10 dB at 6 GHz
    • Linear Output Driver
    • Output Voltage Range over 1200 mV
  • Programmable via Pin Selection, EEPROM, or
    SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V
  • −40°C to 85°C Operating Temperature Range
  • Flow-thru Pinout in 4 mm × 4 mm 24-pin Leadless
    WQFN Package
  • Low 65 mW/Channel (typ) Power Consumption
  • Supports Link Training
  • Supports Out-of-Band (OOB) Signaling
  • Advanced Signal Conditioning I/O
    • Receive CTLE up to 10 dB at 6 GHz
    • Linear Output Driver
    • Output Voltage Range over 1200 mV
  • Programmable via Pin Selection, EEPROM, or
    SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V
  • −40°C to 85°C Operating Temperature Range
  • Flow-thru Pinout in 4 mm × 4 mm 24-pin Leadless
    WQFN Package

The DS125BR111 is an extremely low power high performance repeater/redriver designed to support 1-lane carrying high speed interface up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of 3-10 dB at 6 GHz in each channel. When operating in SAS-3 or PCIe Gen-3 applications, the DS125BR111 preserves transmit signal characteristics allowing the host controller and the end point to negotiate transmit equalizer coefficients. Transparency to the link training protocol maximizes the flexibility of the physical placement of the device within the interconnect and improves overall channel performance.

The programmable settings can be applied easily via pins, software (SMBus or I2C), or loaded via an external EEPROM. In EEPROM mode, the configuration information is automatically loaded on power up, which eliminates the need for an external microprocessor or software driver.

The DS125BR111 is an extremely low power high performance repeater/redriver designed to support 1-lane carrying high speed interface up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of 3-10 dB at 6 GHz in each channel. When operating in SAS-3 or PCIe Gen-3 applications, the DS125BR111 preserves transmit signal characteristics allowing the host controller and the end point to negotiate transmit equalizer coefficients. Transparency to the link training protocol maximizes the flexibility of the physical placement of the device within the interconnect and improves overall channel performance.

The programmable settings can be applied easily via pins, software (SMBus or I2C), or loaded via an external EEPROM. In EEPROM mode, the configuration information is automatically loaded on power up, which 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 DS125BR111 Low Power 12.5 Gbps 1-Lane Linear Repeater with Equalization datasheet (Rev. C) PDF | HTML 22 Aug 2014
Application note Extend reach with Ethernet Redrivers and Retimers for 10G-12.5G Applications 15 May 2020
Application note Linear Repeaters Used in SAS/SATA Applications PDF | HTML 21 Sep 2015
Analog Design Journal Advanced linear equalization in multi-gigabit systems 28 Apr 2015
Analog Design Journal Analog Applications Journal 2Q 2015 28 Apr 2015
Application note Channel Tuning Made Easy Using Linear Repeaters for 10G and 12G Applications 20 Jan 2015
Application note Understanding EEPROM Programming for High Speed Repeaters and Mux Buffers 09 Oct 2014
Application note Advanced Linear Repeater Used in PCIe 3.0 Add-in Card Compliance Environment 02 Oct 2014
EVM User's guide DS125BR111EVM User Guide (Rev. A) 18 Aug 2014

Design & development

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Evaluation board

DS125BR111EVM — DS125BR111EVM 12 Gbps 2-Channel Repeater with Equalization Evaluation Module

The DS125BR111EVM – SMA evaluation kit provides a complete high bandwidth platform to evaluate the 10G-KR, PCIe, and SAS/SATA signal conditioning features of the Texas Instruments DS125BR111 repeater/redriver. The DS125BR111EVM can be used for standard compliance testing, performance evaluation, (...)

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Simulation model

DS125BR111 IBIS-AMI Model Request Form DS125BR111 IBIS-AMI Model Request Form

Simulation model

IBIS-AMI Model Request Form IBIS-AMI Model Request Form

Simulation tool

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 (...)
Simulation tool

TINA-TI SPICE-based analog simulation program

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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WQFN (RTW) 24 View options

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