(ACTIVE) 9.8 to 12.5 Gbps 16-Channel Retimer


Functional Diagram


The DS125DF1610 is a sixteen-channel multi-rate retimer with integrated signal conditioning features. The device includes a fully adaptive Continuous Time Linear Equalizer (CTLE), Decision Feedback Equalizer (DFE), clock and data recovery (CDR), and a transmit FIR filter to enhance the reach and robustness over long, lossy, crosstalk impaired high speed serial links to achieve BER < 1×10-15.

Each channel of the DS125DF1610 independently locks to serial data at 9.8 to 12.5 Gbps and the divide by 2, 4 and 8 sub-multiples. A simple external oscillator (±100ppm) that is synchronous or asynchronous with the incoming data stream is used as a reference clock. Integrated 4x4 cross point switches allow for full non-blocking routing or broadcasting within each quad of the DS125DF1610.

Programmable transmit FIR filter offers control of the pre-cursor, main tap and post-cursor for transmit equalization. The fully adaptive receive equalization (CTLE and DFE) enables longer distance transmission in lossy copper interconnects and backplanes with multiple connectors.

A non-disruptive mission mode eye-monitor feature allows link monitoring internal to the receiver. The built-in PRBS generator and checker compliment the internal diagnostic features to complete standalone BERT measurements. Built-in JTAG enables manufacturing tests.


  • Pin-Compatible Family
    • DS150DF1610: 12.5 to 15 G
    • DS125DF1610: 9.8 to 12.5 G
    • DS110DF1610: 8.5 to 11.3 G
  • 4x4 Analog Cross Point Switch for Each Quad
  • Fully Adaptive CTLE
  • Self tuning DFE, with Optional Continuous Adaption
  • Configurable VGA
  • Adjustable Transmit VOD
  • Adjustable 3-tap Transmit FIR Filter
  • On-chip AC Coupling on Receive Inputs
  • Locks to Half/Quarter/Eighth Data Rates for Legacy Support
  • On-chip Eye Monitor(EOM), PRBS Checker, Pattern Generator
  • Supports JTAG Boundary Scan
  • Programmable Output Polarity Inversion
  • Input Signal Detection, CDR Lock Detection
  • Single 2.5 V ±5% Power Supply
  • SMBus Based Register Configuration
  • Optional EEPROM Configuration
  • 15 mm × 15 mm, 196-pin FCBGA Package
  • Operating Temp Range : –40°C to +85°C

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Device type Retimer    
Number of channels (#) 16    
Application Front Port^Backplane    
Input compatibility AC-Coupled^CML    
Speed (Max) (Gbps) 12.5    
SupplyVoltage (Volt) 2.5    
Protocols 10G-SR/LR^40G-SR4/LR4^Infiniband^CPRI^Interlaken^General Purpose    
Operating temperature range (C) -40 to 85    
Package Group FCBGA|196    

Companion Products

Technical Documents

Datasheet (1)

Application notes (3)

User guides (1)

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