DS125DF410 9.8 to 12.5 Gbps Quad Channel Retimer with Adaptive EQ, CDR and DFE | TI.com

DS125DF410 (ACTIVE)

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

 

Description

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.

Features

  • 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
  • WQFN 48-Pin 7-mm x 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 Ethernet retimers, redrivers/repeaters & MUX buffers

 
Device type
Number of channels (#)
Application
Input compatibility
Speed (Max) (Gbps)
SupplyVoltage (Volt)
Protocols
Operating temperature range (C)
Package Group
DS125DF410 DS100DF410 DS125DF111 DS250DF410 DS250DF810 DS280DF810
Retimer     Retimer     Retimer     Retimer     Retimer     Retimer    
4     4     2     4     8     8    
Front Port
Backplane    
Front Port
Backplane    
Front Port
Backplane    
Backplane
Front Port
Active Cable    
Backplane
Front Port    
 
AC-Coupled
CML    
AC-Coupled
CML    
AC-Coupled
CML    
AC-Coupled
CML    
AC-Coupled
CML    
AC-Coupled
CML    
12.5     10.3       25.8     25.8     28.4    
2.5     2.5     2.5     2.5     2.5     2.5    
10G-SR/LR
40G-SR4/LR4
Infiniband
CPRI
Interlaken
General Purpose    
10G-SR/LR
40G-SR4/LR4
Infiniband
General Purpose    
10G-SR/LR
Infiniband
CPRI
Interlaken
General Purpose    
IEEE802.3bj
100GbE
Infiniband EDR
OIF-CEi-25G-LR/MR/SR/VSR
QSFP28
CFP2/CFP4
CDFP    
IEEE802.3bj
100GbE
Infiniband EDR
OIF-CEi-25G-LR/MR/SR/VSR
QSFP28
CFP2/CFP4
CDFP    
 
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -10 to 85     -40 to 85    
WQFN | 48     WQFN | 48     WQFN | 24     FC/CSP | 101     FCBGA | 135     FCBGA | 135    

Design tool

WEBENCH® Designer DS125DF410

Tx:
Mid Channel:
Rx:
Max Data Rate:  Gbps

 
Number of UI:
PRBS:
 
Eye Diagram