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Product details

Parameters

Type Retimer Mux Number of channels (#) 2 Input compatibility AC-coupling, CML Speed (Max) (Gbps) 25.8 Protocols IEEE802.3bj 100GbE Infiniband EDR OIF-CEI-25G-LR/MR/SR/VSR CPRI QSFP28 CFP2/CFP4 CDFP Operating temperature range (C) -40 to 85 open-in-new Find other Ethernet retimers, redrivers & mux-buffers

Package | Pins | Size

NFBGA (ZLS) 36 25 mm² 5 x 5 open-in-new Find other Ethernet retimers, redrivers & mux-buffers

Features

  • Dual-channel multi-rate retimer with integrated signal conditioning
  • All channels lock independently from 19.6 to 25.8 Gbps (including sub-rates, such as 12.16512 Gbps, 9.8304 Gbps, 6.144 Gbps, and more)
  • Ultra-low latency: <500 ps Typical for 25.78125-Gbps data rate
  • Adaptive continuous time linear equalizer (CTLE)
  • Continuous adaptive decision feedback equalizer (DFE), capable of compensating large channel loss variation over temperature
  • Combined equalization supporting 35-dB channel loss at 12.9 GHz
  • On-chip eye-opening monitor (EOM), PRBS pattern checker and generator
  • Low-jitter transmitter with 3-Tap FIR filter
  • Integrated 2×2 cross-point
  • Recovered clock available for system clock synchronization applications on channel 0
  • Single power supply, no low-jitter reference clock required
  • Wide stay-in-lock temperature range

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Description

The DS250DF230 is a dual-channel multi-rate retimer with integrated signal conditioning. The device is used to extend the reach and robustness of long, lossy, crosstalk-impaired high-speed serial links and while achieving a bit error rate (BER) of 10–15 or less.

Each channel of the DS250DF230 independently locks to serial data rates in a continuous range from 19.6 Gbps to 25.8 Gbps or to any supported sub-rate (÷2 and ÷4), including key data rates such as 12.16512 Gbps, 9.8304 Gbps, 6.144 Gbps.

The DS250DF230 has a single power supply and minimal need for external components. These features reduce PCB routing complexity and BOM cost.

The advanced equalization features of the DS250DF230 include a low-jitter 3-tap transmit finite impulse response (FIR) filter, an adaptive continuous-time linear equalizer (CTLE), and an adaptive decision feedback equalizer (DFE). This enables reach extension for lossy interconnect and backplanes with multiple connectors and crosstalk. The integrated CDR function is available for front-port optical module applications to reset the jitter budget and retime the high-speed serial data. The DS250DF230 supplies 2x2 cross-point that gives the host lane crossing, fanout, and multiplexing options.

The DS250DF230 can be configured either through the SMBus or through an external EEPROM. Up to 16 devices can share an EEPROM using common-channel configuration. A non-disruptive on-chip eye monitor and a PRBS generator and checker is available for in-system diagnostics.

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More information

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 3
Type Title Date
* Datasheet DS250DF230 25-Gbps Multi-Rate 2-Channel Retimer datasheet (Rev. B) Oct. 02, 2019
Application note Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. A) Jan. 07, 2020
User guide DS250DF230EVM User Guide (Rev. A) Sep. 03, 2019

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
899
Description

The DS250DF230EVM allows for easy evaluation of the 25 Gbps retimer DS250DF230. Users are required to supply power and high speed traffic to the EVM via Huber+Suhner 1x8 MXP connectors. Huber+Suhner cables are not included.

Through the onboard USB2ANY connection and EVM software, users can evaluate (...)

Features
  • Programmable via on board USB2ANY and EVM software
  • Supports data rates up to 25.8 Gbps
  • EVM supports single supply (2.5 V or 3.3 V)

Design tools & simulation

SIMULATION MODEL Download
SNLM215.ZIP (34 KB) - IBIS Model
SIMULATION TOOL Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)

CAD/CAE symbols

Package Pins Download
NFBGA (ZLS) 36 View options

Ordering & quality

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