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DS125BR401

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2.5/5.0/8.0-Gbps 4-lane PCI Express redriver with equalization & De-Emp

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Data sheet

DS125BR401

ACTIVE
Data sheet Order now

Product details

Type Redriver Protocols 10G-CR, 10G-KR, 10G-SR/LR, 40G-CR4, 40G-KR4, 40G-SR4/LR4, CPRI, Fibre Channel, General purpose, Infiniband, Interlaken, OBSAI, PCIe1, PCIe2, PCIe3, sRIO Applications PCIe, SAS, SATA Number of channels 8 Speed (max) (Gbpp) 12.5 Supply voltage (V) 2.5, 3.3 Rating Catalog Operating temperature range (°C) -40 to 85
Type Redriver Protocols 10G-CR, 10G-KR, 10G-SR/LR, 40G-CR4, 40G-KR4, 40G-SR4/LR4, CPRI, Fibre Channel, General purpose, Infiniband, Interlaken, OBSAI, PCIe1, PCIe2, PCIe3, sRIO Applications PCIe, SAS, SATA Number of channels 8 Speed (max) (Gbpp) 12.5 Supply voltage (V) 2.5, 3.3 Rating Catalog Operating temperature range (°C) -40 to 85
WQFN (NJY) 54 55 mm² 10 x 5.5
  • Comprehensive Family, Proven System
    Interoperability
    • DS125BR111: 1-Lane Repeater
    • DS125BR401: 4-Lane Repeater
    • DS125BR800: 8-Channel Repeater
    • DS125MB203: 2-Port 2:1/1:2 Mux/Switch
    • DS125DF410: 4-Channel Unidirectional
      Retimer With CDR
  • Low 65-mW/Channel (Typical) Power
    Consumption, With Option to Power Down
    Unused Channels
  • Nonlimiting Output for PCIe and 10G-KR Link
    Training Support
  • Advanced Signal Conditioning Features
    • Receive Equalization up to 30 dB at 6.25 GHz
    • Transmit De-Emphasis up to –12 dB
    • Transmit Output Voltage Control: 700 mV to
      1300 mV
  • Programmable Through Pin Selection, EEPROM,
    or SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V (Selectable)
  • –40°C to 85°C Operating Temperature Range
  • 5-kV HBM ESD Rating
  • Flow-Thru Pinout in 10-mm × 5.5-mm 54-Pin
    Leadless WQFN Package
  • Supported Protocols
    • sRIO, Infiniband, Interlaken, CPRI, OBSAI
    • Other Proprietary Interface up to 12.5 Gbps
  • Comprehensive Family, Proven System
    Interoperability
    • DS125BR111: 1-Lane Repeater
    • DS125BR401: 4-Lane Repeater
    • DS125BR800: 8-Channel Repeater
    • DS125MB203: 2-Port 2:1/1:2 Mux/Switch
    • DS125DF410: 4-Channel Unidirectional
      Retimer With CDR
  • Low 65-mW/Channel (Typical) Power
    Consumption, With Option to Power Down
    Unused Channels
  • Nonlimiting Output for PCIe and 10G-KR Link
    Training Support
  • Advanced Signal Conditioning Features
    • Receive Equalization up to 30 dB at 6.25 GHz
    • Transmit De-Emphasis up to –12 dB
    • Transmit Output Voltage Control: 700 mV to
      1300 mV
  • Programmable Through Pin Selection, EEPROM,
    or SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V (Selectable)
  • –40°C to 85°C Operating Temperature Range
  • 5-kV HBM ESD Rating
  • Flow-Thru Pinout in 10-mm × 5.5-mm 54-Pin
    Leadless WQFN Package
  • Supported Protocols
    • sRIO, Infiniband, Interlaken, CPRI, OBSAI
    • Other Proprietary Interface up to 12.5 Gbps

The DS125BR401 device is an extremely low-power high-performance multiprotocol repeater and redriver designed to support four lanes of PCIe Gen-3/2/1, 10G-KR, and other high-speed interface serial protocols up to 12.5 Gbps. The continuous time linear equalizer (CTLE) of the receiver provides a boost of up to 30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels and can open an input eye that is completely closed due to intersymbol interference (ISI) induced by interconnect medium such as backplane traces of 30 inches or more or copper cables of 8 meters or more, hence enabling host controllers to ensure an error-free end-to-end link. The transmitter provides a de-emphasis boost of up to –12 dB and output voltage amplitude control from 700 mV to 1300 mV to allow maximum flexibility in the physical placement within the interconnect channel.

When operating in 10G-KR, and PCIe Gen-3 mode, the DS125BR401 allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This transparency to the link training protocol can extend the maximum channel loss with minimum latency. With a low power consumption of 65 mW/channel (typical) and the option to turn off unused channels, the DS125BR401 enables energy efficient system design. A single supply of 3.3 V or 2.5 V is required to power the device.

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

The DS125BR401 device is an extremely low-power high-performance multiprotocol repeater and redriver designed to support four lanes of PCIe Gen-3/2/1, 10G-KR, and other high-speed interface serial protocols up to 12.5 Gbps. The continuous time linear equalizer (CTLE) of the receiver provides a boost of up to 30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels and can open an input eye that is completely closed due to intersymbol interference (ISI) induced by interconnect medium such as backplane traces of 30 inches or more or copper cables of 8 meters or more, hence enabling host controllers to ensure an error-free end-to-end link. The transmitter provides a de-emphasis boost of up to –12 dB and output voltage amplitude control from 700 mV to 1300 mV to allow maximum flexibility in the physical placement within the interconnect channel.

When operating in 10G-KR, and PCIe Gen-3 mode, the DS125BR401 allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This transparency to the link training protocol can extend the maximum channel loss with minimum latency. With a low power consumption of 65 mW/channel (typical) and the option to turn off unused channels, the DS125BR401 enables energy efficient system design. A single supply of 3.3 V or 2.5 V is required to power the device.

The programmable settings can be applied easily through pins, software (SMBus or I2C), or loaded through an external EEPROM. When operating in the 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 DS125BR401 Low-Power, 12.5-Gbps, 4-Lane Repeater With Input Equalization and Output De-Emphasis datasheet (Rev. D) PDF | HTML 14 May 2015
Application note Understanding EEPROM Programming for High Speed Repeaters and Mux Buffers 09 Oct 2014
User guide DS125BR401EVK User’s Guide 09 Nov 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Support software

SIGCONARCHITECT — SigCon Architect v2.0.0.8

Supported products & hardware

Supported products & hardware

Products
PCIe, SAS & SATA ICs
DS125BR111 — 12.5-Gbps 2-channel redrivers with input equalization DS125BR401 — 2.5/5.0/8.0-Gbps 4-lane PCI Express redriver with equalization & De-Emp DS125BR401A — 12-Gbps 4-lane redriver with equalization DS125BR800A — 12.5-Gbps 8-channel redriver with input CTLE and output De-Emphasis DS125BR820 — 12-Gbps 8-channel linear redriver with equalization DS160PR412 — PCIe® 4.0, 16-Gbps, 4-channel linear redrivers with integrated 1:2 demux DS160PR421 — PCIe® 4.0 16-Gbps 4-channel linear redrivers with integrated 2:1 mux DS160PR810 — PCIe® 4.0, 16 Gbps, 8-channel linear redriver DS160PR822 — PCIe® 4.0 16-Gbps 8-channel linear redriver with four 2x2 crosspoint mux DS160PT801 — PCIe® 4.0 16-Gbps 8-Lane (16-Channel) retimer DS160UP822 — UPI 2.0 16-Gbps 8-channel linear redriver with four 2x2 crosspoint mux DS320PR810 — PCIe® 5.0, 32-Gbps, 8-channel linear redriver DS320PR822 — PCIe® 5.0, 32-Gbps, 8-channel linear redriver with four 2x2 crosspoint multiplexers DS80PCI102 — 2.5/5.0/8.0-Gbps 1-lane PCI Express redriver with equalization and De-Emphasis DS80PCI800 — 2.5/5.0/8.0-Gbps 8-channel PCI Express redriver with equalization & De-Emphasis DS80PCI810 — 2.5/5.0/8.0-Gbps 8-channel linear redriver with equalization SN75LVPE3410 — PCIe® 3.0 8-Gbps 4-Channel Linear Redriver TMUXHS4412 — 4-Channel 20-Gbps differential 2:1/1:2 mux/demux
Ethernet retimers, redrivers & mux-buffers
DS100BR111 — 10.3-Gbps ultra low power 2-ch redriver with input equalization and output de-emphasis DS100BR111A — 10.3-Gbps ultra low power 2-channel redriver with input equalization DS100BR210 — 10.3-Gbps low power 2-ch redriver w/ input equalization and output de-emphasis DS100KR800 — 10.3-Gbps 8 channel (uni-directional) redriver with EQ and DE DS125BR800 — 2.5/5.0/8.0-Gbps 8-ch PCIe redriver with de-emphasis DS125MB203 — 12.5-Gbps dual port mux and fanout buffer DS64BR111 — 6.4-Gbps ultra low power 2-channel redriver with input equalization and output de-emphasis
Serial digital interface (SDI) ICs
LMH0318 — 3G HD/SD SDI reclocker with integrated cable driver LMH1218 — 12G SDI cable driver with integrated reclocker
Hardware development
GUI for evaluation module (EVM)
SIGCONARCHITECT — SigCon Architect utility tool
Evaluation board
DS100BR111EVK — DS100BR111EVK Evaluation Module DS100BR210EVK — DS100BR210EVK Evaluation Module DS100DF410EVK — DS100DF410EVK evaluation board DS100KR800EVK — DS100KR800EVK evaluation board DS110DF111EVM — DS110DF111EVM: 8.5-11.3 Gbps Retimer Evaluation Module DS110DF410EVM — DS110DF410EVM: 8.5 to 11.3 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE Evaluation Module DS125BR111EVM — DS125BR111EVM 12 Gbps 2-Channel Repeater with Equalization Evaluation Module DS125BR401AEVM — DS125BR401AEVM: 12-Gbps 4-Lane Repeater With Equalization Evaluation Module DS125BR820EVM — DS125BR820EVM: 12.5 Gbps 8-Channel Repeater with Equalization Evaluation Module DS125DF111EVM — DS125DF111EVM: 9.8-12.5 Gbps Retimer Evaluation Module DS125DF410EVM — DS125DF410EVM: 9.8 to 12.5 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE Evaluation Module DS80PCI102EVK — DS80PCI102 SMA Evaluation Kit DS80PCI800EVK — DS80PCI800EVK Evaluation Module DS80PCI810EVM — DS80PCI810 Evaluation Module LMH1218EVM — LMH1218 Evaluation Module USB2ANY — USB2ANY interface adapter
Interface adapter
DPS-DONGLE-EVM — Interface adapter board for repeaters, retimers & SDI products evaluation module
Download
Support software

SIGCONARCHITECT-WRTE — SigCon Architect With RTE v2.0.0.8

Supported products & hardware

Supported products & hardware

Products
PCIe, SAS & SATA ICs
DS125BR111 — 12.5-Gbps 2-channel redrivers with input equalization DS125BR401 — 2.5/5.0/8.0-Gbps 4-lane PCI Express redriver with equalization & De-Emp DS125BR401A — 12-Gbps 4-lane redriver with equalization DS125BR800A — 12.5-Gbps 8-channel redriver with input CTLE and output De-Emphasis DS125BR820 — 12-Gbps 8-channel linear redriver with equalization DS160PR412 — PCIe® 4.0, 16-Gbps, 4-channel linear redrivers with integrated 1:2 demux DS160PR421 — PCIe® 4.0 16-Gbps 4-channel linear redrivers with integrated 2:1 mux DS160PR810 — PCIe® 4.0, 16 Gbps, 8-channel linear redriver DS160PR822 — PCIe® 4.0 16-Gbps 8-channel linear redriver with four 2x2 crosspoint mux DS160PT801 — PCIe® 4.0 16-Gbps 8-Lane (16-Channel) retimer DS160UP822 — UPI 2.0 16-Gbps 8-channel linear redriver with four 2x2 crosspoint mux DS320PR810 — PCIe® 5.0, 32-Gbps, 8-channel linear redriver DS320PR822 — PCIe® 5.0, 32-Gbps, 8-channel linear redriver with four 2x2 crosspoint multiplexers DS80PCI102 — 2.5/5.0/8.0-Gbps 1-lane PCI Express redriver with equalization and De-Emphasis DS80PCI800 — 2.5/5.0/8.0-Gbps 8-channel PCI Express redriver with equalization & De-Emphasis DS80PCI810 — 2.5/5.0/8.0-Gbps 8-channel linear redriver with equalization SN75LVPE3410 — PCIe® 3.0 8-Gbps 4-Channel Linear Redriver TMUXHS4412 — 4-Channel 20-Gbps differential 2:1/1:2 mux/demux
Ethernet retimers, redrivers & mux-buffers
DS100BR111 — 10.3-Gbps ultra low power 2-ch redriver with input equalization and output de-emphasis DS100BR111A — 10.3-Gbps ultra low power 2-channel redriver with input equalization DS100BR210 — 10.3-Gbps low power 2-ch redriver w/ input equalization and output de-emphasis DS100KR800 — 10.3-Gbps 8 channel (uni-directional) redriver with EQ and DE DS125BR800 — 2.5/5.0/8.0-Gbps 8-ch PCIe redriver with de-emphasis DS125MB203 — 12.5-Gbps dual port mux and fanout buffer DS64BR111 — 6.4-Gbps ultra low power 2-channel redriver with input equalization and output de-emphasis
Serial digital interface (SDI) ICs
LMH0318 — 3G HD/SD SDI reclocker with integrated cable driver LMH1218 — 12G SDI cable driver with integrated reclocker
Hardware development
GUI for evaluation module (EVM)
SIGCONARCHITECT — SigCon Architect utility tool
Evaluation board
DS100BR111EVK — DS100BR111EVK Evaluation Module DS100BR210EVK — DS100BR210EVK Evaluation Module DS100DF410EVK — DS100DF410EVK evaluation board DS100KR800EVK — DS100KR800EVK evaluation board DS110DF410EVM — DS110DF410EVM: 8.5 to 11.3 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE Evaluation Module DS125BR111EVM — DS125BR111EVM 12 Gbps 2-Channel Repeater with Equalization Evaluation Module DS125BR401AEVM — DS125BR401AEVM: 12-Gbps 4-Lane Repeater With Equalization Evaluation Module DS125BR820EVM — DS125BR820EVM: 12.5 Gbps 8-Channel Repeater with Equalization Evaluation Module DS125DF410EVM — DS125DF410EVM: 9.8 to 12.5 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE Evaluation Module DS250DF810EVM — 25 Gbps multi-rate 8-channel retimer evaluation module DS280BR820EVM — DS280BR820 28 Gbps 8-channel linear repeater evaluation module DS280MB810EVM — DS280MB810 28 Gbps 8-Channel Linear Repeater With Crosspoint Evaluation Module DS80PCI102EVK — DS80PCI102 SMA Evaluation Kit DS80PCI800EVK — DS80PCI800EVK Evaluation Module DS80PCI810EVM — DS80PCI810 Evaluation Module LMH1218EVM — LMH1218 Evaluation Module
Interface adapter
DPS-DONGLE-EVM — Interface adapter board for repeaters, retimers & SDI products evaluation module
Download
Simulation model

DS125BR401 IBIS-AMI Model

SNLM278.ZIP (6408 KB) - IBIS-AMI Model
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