DS125BR800A

ACTIVE

12.5-Gbps 8-channel redriver with input CTLE and output De-Emphasis

Product details

Type Redriver Protocols General purpose, PCIe1, PCIe2, PCIe3, SAS1, SAS2, SAS3, SATA1, SATA2, SATA3 Applications 10G-KR, PCIe, SAS, SATA Number of channels 8 Speed (max) (Gbps) 12.5 Supply voltage (V) 2.5, 3.3 Rating Catalog Operating temperature range (°C) -40 to 85
Type Redriver Protocols General purpose, PCIe1, PCIe2, PCIe3, SAS1, SAS2, SAS3, SATA1, SATA2, SATA3 Applications 10G-KR, PCIe, SAS, SATA Number of channels 8 Speed (max) (Gbps) 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
  • Proven System Interoperability
  • Comprehensive multi-protocol Repeater Family
  • Low 65-mW/Channel (Typ) Power Consumption,
    With Option to Power Down Unused Channels
  • Transparent Management of Link Training
    Protocol for PCIe and SAS
  • Advanced Signal Conditioning Features
    • Rx CTLE up to 30 dB (24 dB for SAS3)
    • Tx De-Emphasis up to –12 dB
    • Tx Output Voltage Control: 700 – 1300 mV
  • Device Configuration Interface:
    • Pin Selection, EEPROM, or SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V
  • −40°C to 85°C Operating Temperature Range
  • 3-kV HBM ESDRating
  • Flow-Thru Pinout: 54-Pin LLP
    (10 mm × 5.5 mm, 0.5 mm pitch)
  • Supported Protocols
    • SAS/SATA
    • PCIe
    • Other Proprietary Interface up to 12.5 Gbps

All trademarks are the property of their respective owners.

  • Proven System Interoperability
  • Comprehensive multi-protocol Repeater Family
  • Low 65-mW/Channel (Typ) Power Consumption,
    With Option to Power Down Unused Channels
  • Transparent Management of Link Training
    Protocol for PCIe and SAS
  • Advanced Signal Conditioning Features
    • Rx CTLE up to 30 dB (24 dB for SAS3)
    • Tx De-Emphasis up to –12 dB
    • Tx Output Voltage Control: 700 – 1300 mV
  • Device Configuration Interface:
    • Pin Selection, EEPROM, or SMBus Interface
  • Single Supply Voltage: 2.5 V or 3.3 V
  • −40°C to 85°C Operating Temperature Range
  • 3-kV HBM ESDRating
  • Flow-Thru Pinout: 54-Pin LLP
    (10 mm × 5.5 mm, 0.5 mm pitch)
  • Supported Protocols
    • SAS/SATA
    • PCIe
    • Other Proprietary Interface up to 12.5 Gbps

All trademarks are the property of their respective owners.

The DS125BR800A is an extremely low-power high-performance multi-protocol repeater/redriver designed to support eight channels of PCIe, SAS, and other high-speed interface serial protocols up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of up to +30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels and is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as 30in+ backplane traces or 8m+ copper cables, hence enabling host controllers to ensure an error free end-to-end link. The strong linear equalization maximizes interconnect channel extension when the DS125BR800A is placed with the majority of channel loss on the devices input side. Adjustable transmit de-emphasis and output voltage amplitude help to compensate for the remaining channel attenuation on the output side.

When operating in SAS-3 and PCIe Gen-3 mode, the DS125BR800A transparently allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This seamless management of the link training protocol ensures system level interoperability with minimum latency. With a low power consumption of 65 mW/channel (typ) and option to turn-off unused channels, the DS125BR800A 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 via pins, software (SMBus or I2C) or loaded via 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 DS125BR800A is an extremely low-power high-performance multi-protocol repeater/redriver designed to support eight channels of PCIe, SAS, and other high-speed interface serial protocols up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of up to +30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels and is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as 30in+ backplane traces or 8m+ copper cables, hence enabling host controllers to ensure an error free end-to-end link. The strong linear equalization maximizes interconnect channel extension when the DS125BR800A is placed with the majority of channel loss on the devices input side. Adjustable transmit de-emphasis and output voltage amplitude help to compensate for the remaining channel attenuation on the output side.

When operating in SAS-3 and PCIe Gen-3 mode, the DS125BR800A transparently allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This seamless management of the link training protocol ensures system level interoperability with minimum latency. With a low power consumption of 65 mW/channel (typ) and option to turn-off unused channels, the DS125BR800A 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 via pins, software (SMBus or I2C) or loaded via 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 DS125BR800A Low-Power 12.5-Gbps 8-Channel (Unidirectional) Repeater With Input E datasheet 05 Nov 2013
Application note Extend reach with Ethernet Redrivers and Retimers for 10G-12.5G Applications (Rev. A) 31 Jan 2023
Technical article Differential pairs: how an equalizer solves insertion-loss impairment PDF | HTML 12 Jan 2016
Application note Understanding EEPROM Programming for High Speed Repeaters and Mux Buffers 09 Oct 2014
EVM User's guide DS125BR800AEVM User's Guide 18 Nov 2013

Design & development

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Support software

SIGCONARCHITECT SigCon Architect v2.0.0.8

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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
Support software

SIGCONARCHITECT-WRTE SigCon Architect With RTE v2.0.0.8

lock = Requires export approval (1 minute)
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
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WQFN (NJY) 54 View options

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