9.8 to 12.5 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE - DS125DF410


9.8 to 12.5 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE


The DS125DF410 is four channel retimer with integrated signal conditioning. The device includes a fully adaptive Continuous-Time Linear Equalizer (CTLE), self calibrating 5-tap Decision Feedback Equalizer (DFE), Clock and Data Recovery (CDR), and transmit De-Emphasis (DE) driver to enable data transmission over long, lossy and crosstalk-impaired highspeed serial links to achieve BER < 1×10–15.

Each channel can independently lock to data rate from 9.8 to 12.5 Gbps, and associated sub rates (div by 2, 4 and 8) to support a variety of communication protocols. A 25 MHz crystal oscillator clock is used to speed up the CDR lock process. This clock is not used for training the PLL and does not need to be synchronous with the serial data.

The programmable settings can be applied using the SMBus (I2C) interface, or they can be loaded via an external EEPROM. An on-chip eye monitor and a PRBS generator allow real-time measurement of high-speed serial data for system bring-up or field tuning.

The device is offered in a RHS (QFN) 48-pin, 7 mm × 7 mm package. A flow-through pinout for the high speed signals and a single power supply makes the DS125DF410 easy to use.


  • Each Channel Independently Locks to Data Rates
    from 9.8 to 12.5 Gbps and Submultiples
  • Fast Lock Operation Based on Protocol-Select Mode
  • Low Latency (~300ps)
  • Adaptive Equalization up to 34 dB Boost at 5 GHz
  • Adjustable Transmit VOD : 600 to 1300 mVp-p
  • Adjustable Transmit De-emphasis to –15 dB
  • Typical Power Dissipation (EQ+DFE+CDR+DE): 180 mW/Channel
  • Programmable Output Polarity Inversion
  • Input Signal Detection, CDR Lock Detection/Indicator
  • On-Chip Eye Monitor (EOM), PRBS Generator
  • Single 2.5 V ±5% Power Supply
  • SMBus/EEPROM Configuration Modes
  • Operating Temperature Range of –40 to 85°C
  • RHS (QFN) 48-Pin 7 mm × 7 mm Package
  • Easy Pin Compatible Upgrade Between Repeater and Retimers
    • DS100RT410 (EQ+CDR+DE): 10.3125 Gbps
    • DS100DF410 (EQ+DFE+CDR+DE): 10.3125 Gbps
    • DS110RT410 (EQ+CDR+DE): 8.5 – 11.3 Gbps
    • DS110DF410 (EQ+DFE+CDR+DE): 8.5 – 11.3 Gbps
    • DS125RT410 (EQ+CDR+DE): 9.8 – 12.5 Gbps
    • DS125DF410 (EQ+DFE+CDR+DE): 9.8 – 12.5 Gbps
    • DS100BR410 (EQ+DE): Up to 10.3125 Gbps

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Parametrics Compare all products in Retimer

Input Compatibility
Number of Channels (#)
SupplyVoltage (Volt)
IN SigCon
OUT SigCon
Output Compatibility
Operating Temperature Range (C)
Approx. Price (US$)
-40 to 85    
13.95 | 1ku    

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