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DS280BR810

ACTIVE

28-Gbps low power 8-channel linear redriver

Product details

Type Redriver Number of channels 8 Input compatibility CML Speed (max) (Gbpp) 28.125 Protocols 100G-CR, 100GbE, CDFP, CFP2/CFP4, IEEE802.3bj, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR/CR, QSFP28 Operating temperature range (°C) -40 to 85
Type Redriver Number of channels 8 Input compatibility CML Speed (max) (Gbpp) 28.125 Protocols 100G-CR, 100GbE, CDFP, CFP2/CFP4, IEEE802.3bj, Infiniband EDR, OIF-CEi-25G-LR/MR/SR/VSR/CR, QSFP28 Operating temperature range (°C) -40 to 85
NFBGA (ZBF) 135 104 mm² 13 x 8
  • Octal-Channel Multi-Protocol Linear Equalizer Supporting up to 28-Gbps Interfaces
  • Low Power Consumption: 93 mW and Channel (Typical)
  • No Heat Sink Required
  • Linear Equalization for Seamless Support of CR4/KR4 Link Training
  • Extends Channel Reach by 15 dB+ Beyond Normal ASIC-to-ASIC Capability
  • Ultra-Low Latency: 100 ps (Typical)
  • Low Additive Random Jitter
  • Small 8-mm x 13-mm BGA Package with Integrated RX and TX AC Coupling Capacitors for Easy Flow-Through Routing
  • Unique Pinout Allows Routing High-Speed Signals Underneath the Package
  • Pin-Compatible Retimer Available
  • Single 2.5-V ±5% Power Supply
  • –40°C to +85°C Operating Temperature Range
  • Octal-Channel Multi-Protocol Linear Equalizer Supporting up to 28-Gbps Interfaces
  • Low Power Consumption: 93 mW and Channel (Typical)
  • No Heat Sink Required
  • Linear Equalization for Seamless Support of CR4/KR4 Link Training
  • Extends Channel Reach by 15 dB+ Beyond Normal ASIC-to-ASIC Capability
  • Ultra-Low Latency: 100 ps (Typical)
  • Low Additive Random Jitter
  • Small 8-mm x 13-mm BGA Package with Integrated RX and TX AC Coupling Capacitors for Easy Flow-Through Routing
  • Unique Pinout Allows Routing High-Speed Signals Underneath the Package
  • Pin-Compatible Retimer Available
  • Single 2.5-V ±5% Power Supply
  • –40°C to +85°C Operating Temperature Range

The DS280BR810 is an extremely low-power, high-performance eight-channel linear equalizer supporting multi-rate, multi-protocol interfaces up to 28 Gbps. It is used to extend the reach and improve the robustness of high-speed serial links for front-port, backplane, and chip-to-chip applications.

The linear nature of the DS280BR810’s equalization preserves the transmit signal characteristics, thereby allowing the host and link partner ASICs to freely negotiate transmit equalizer coefficients (100 G-CR4/KR4). This transparency to the link training protocol facilitates system-level interoperability with minimal effect on the latency. Each channel operates independently, which allows the DS280BR810 to support individual lane Forward Error Correction (FEC) pass-through.

The DS280BR810’s small package dimensions, optimized high-speed signal escape, and the pin-compatible retimer portfolio make the DS280BR810 ideal for high-density backplane applications. Simplified equalization control, low power consumption, and ultra-low additive jitter make it suitable for front-port interfaces such as 100 G-SR4/LR4/CR4. The small 8-mm x 13-mm footprint easily fits behind numerous standard front-port connectors like QSFP28, SFP28, CFP2/CFP4, and CDFP without the need for a heat sink.

Integrated AC coupling capacitors (RX and TX) eliminate the need for external capacitors on the PCB. The DS280BR810 has a single power supply and minimal need for external components. These features reduce PCB routing complexity and bill of materials (BOM) cost.

A pin-compatible retimer device is available for longer reach applications.

The DS280BR810 can be configured either via the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM.

The DS280BR810 is an extremely low-power, high-performance eight-channel linear equalizer supporting multi-rate, multi-protocol interfaces up to 28 Gbps. It is used to extend the reach and improve the robustness of high-speed serial links for front-port, backplane, and chip-to-chip applications.

The linear nature of the DS280BR810’s equalization preserves the transmit signal characteristics, thereby allowing the host and link partner ASICs to freely negotiate transmit equalizer coefficients (100 G-CR4/KR4). This transparency to the link training protocol facilitates system-level interoperability with minimal effect on the latency. Each channel operates independently, which allows the DS280BR810 to support individual lane Forward Error Correction (FEC) pass-through.

The DS280BR810’s small package dimensions, optimized high-speed signal escape, and the pin-compatible retimer portfolio make the DS280BR810 ideal for high-density backplane applications. Simplified equalization control, low power consumption, and ultra-low additive jitter make it suitable for front-port interfaces such as 100 G-SR4/LR4/CR4. The small 8-mm x 13-mm footprint easily fits behind numerous standard front-port connectors like QSFP28, SFP28, CFP2/CFP4, and CDFP without the need for a heat sink.

Integrated AC coupling capacitors (RX and TX) eliminate the need for external capacitors on the PCB. The DS280BR810 has a single power supply and minimal need for external components. These features reduce PCB routing complexity and bill of materials (BOM) cost.

A pin-compatible retimer device is available for longer reach applications.

The DS280BR810 can be configured either via the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM.

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Technical documentation

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Type Title Date
* Data sheet DS280BR810 Low Power 28 Gbps 8 Channel Linear Repeater datasheet (Rev. C) PDF | HTML 02 Oct 2019
Application note Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. B) PDF | HTML 01 May 2023
More literature Advanced Signal Conditioning Made Easy and Efficient 12 Jan 2017
Technical article Designing a 25G system: 5 tips to balance power, performance and price PDF | HTML 01 Feb 2016
Application note Understanding EEPROM Programming for 25G and 28G Repeaters and Retimers 13 Jan 2016

Design & development

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Reference designs

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NFBGA (ZBF) 135 Ultra Librarian

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