25-Gbps multi-rate 8-channel retimer
Product details
Parameters
Package | Pins | Size
Features
- Octal-channel multi-rate retimer with integrated signal conditioning
- All channels lock independently from 20.2752 to 25.8 Gbps (including sub-rates like 10.3125 Gbps, 12.5 Gbps, and more)
- Ultra-low latency: <500 ps typical for 25.78125 Gbps data rate
- Single power supply, no low-jitter reference clock required, and integrated ac coupling capacitors to reduce board routing complexity and BOM cost
- Integrated 2×2 cross point
- Adaptive continuous time linear equalizer (CTLE)
- Adaptive decision feedback equalizer (DFE)
- Low-jitter transmitter with 3-Tap FIR filter
- Combined equalization supporting 35+ dB channel loss at 12.9 GHz
- Adjustable transmit amplitude: 205 mVppd to 1225 mVppd (typical)
- On-chip eye opening monitor (EOM), PRBS pattern checker/generator small 8 mm × 13 mm BGA package with easy flow-through routing
- Unique pinout allows routing high-speed signals underneath the package
- Pin-compatible repeater available
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Description
The DS250DF810 is an eight-channel multi-rate Retimer with integrated signal conditioning. It is used to extend the reach and robustness of long, lossy, crosstalk-impaired high-speed serial links while achieving a bit error rate (BER) of 10-15 or less.
Each channel of the DS250DF810 independently locks to serial data rates in a continuous range from 20.6 Gbps to 25.8 Gbps or to any supported sub-rate (÷2 and ÷4), including key data rates such as 10.3125 Gbps and 12.5 Gbps, which allows the DS250DF810 to support individual lane Forward Error Correction (FEC) pass-through.
Integrated physical AC coupling capacitors (TX and RX) eliminate the need for external capacitors on the PCB. The DS250DF810 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 DS250DF810 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 ideal for front-port optical module applications to reset the jitter budget and retime the high-speed serial data. The DS250DF810 implements 2x2 cross-point on each channel pair, providing the host with both lane crossing and fanout options.
The DS250DF810 can be configured either via the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM. A non-disruptive on-chip eye monitor and a PRBS generator/checker allow for in-system diagnostics.
More Information
The IBIS AMI models, device programming guide and device GUI profile, are available: Request now
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | DS250DF810 25 Gbps Multi-Rate 8-Channel Retimer datasheet (Rev. C) | Oct. 24, 2019 |
Application note | Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. A) | Jan. 07, 2020 | |
User guide | DS250DF810EVM User's Guide (Rev. C) | Sep. 03, 2019 | |
Application note | Transmitter Optimization for ≥ 25Gbps Retimer Links | Sep. 08, 2017 | |
More literature | Advanced Signal Conditioning Made Easy and Efficient | Jan. 12, 2017 | |
Application note | Green box testing: A method for optimizing high-speed serial links | Jul. 21, 2016 | |
Technical articles | Designing a 25G system: 5 tips to balance power, performance and price | Feb. 01, 2016 | |
Application note | Understanding EEPROM Programming for 25G and 28G Repeaters and Retimers | Jan. 13, 2016 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The DS250DF810EVM allows for easy evaluation of the 25 Gbps retimer DS250DF810. 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 25.8Gbps
- EVM supports single supply (2.5V or 3.3V)
Design tools & simulation
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
- (...)
Reference designs
Design files
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download TIDA-00427 BOM (from DS280BR810 QSFP).pdf (115KB) -
download TIDA-00427 Assembly Files (from DS280BR810 QSFP).zip (1885KB) -
download TIDA-00427 Fabrication Drawing (from DS280BR810 QSFP).pdf (447KB) -
download TIDA-00427 PCB (from DS280BR810 QSFP).pdf (4178KB) -
download TIDA-00427 CAD Files (from DS280BR810 QSFP).zip (2370KB) -
download TIDA-00427 Gerber (from DS280BR810 QSFP).zip (2204KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
FCBGA (ABV) | 135 | View options |
Ordering & quality
- RoHS
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- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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