DS250DF410
- Quad-channel multi-rate retimer with integrated signal conditioning
- All channels lock independently from 20.2752 to 25.8 Gbps (including sub-rates such as 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 minimal supply decoupling 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
- Supports JTAG/AC-JTAG boundary scan
- Small 6-mm × 6-mm BGA package with easy flow-through routing
The DS250DF410 is a four-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 DS250DF410 independently locks to serial data rates in a continuous range from 20.2752 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 DS250DF410 to support individual lane Forward Error Correction (FEC) pass-through.
The DS250DF410 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 DS250DF410 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 DS250DF410 implements 2x2 cross-point on each channel pair, providing the host with lane crossing, fanout, and multiplexing options.
The DS250DF410 can be configured either through the SMBus or through an external EEPROM. Up to 16 devices can share a single EEPROM using Common Channel format. A non-disruptive on-chip eye monitor and a PRBS generator/checker allow for in-system diagnostics.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | DS250DF410 25 Gbps Multi-Rate 4-Channel Retimer datasheet (Rev. D) | PDF | HTML | 2019/10/24 | ||
| 應用說明 | Implementing Pin Compatible Ethernet Redrivers and Retimers | PDF | HTML | 2024/10/28 | |||
| 應用說明 | Optimal Implementation of 25G-28G Ethernet Retimers versus Redrivers (Rev. B) | PDF | HTML | 2023/5/1 | |||
| 更多文件說明 | Advanced Signal Conditioning Made Easy and Efficient | 2017/1/12 | ||||
| 類比設計期刊 | Green box testing: A method for optimizing high-speed serial links | 2016/7/21 | ||||
| 應用說明 | Understanding EEPROM Programming for 25G and 28G Repeaters and Retimers | PDF | HTML | 2016/1/13 |
設計與開發
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DS250DF410EVM — DS250DF410 25 Gbps 多速率四通道重定時器評估模組
DS250DF410EVM 可輕鬆評估 25Gbps 重定時器 DS250DF410。使用者需要透過 Huber+Suhner 1x8 MXP 連接器，為 EVM 提供電源和高速流量。不包含 Huber+Suhner 纜線。
使用者可以透過板載 USB2ANY 連線及 EVM 軟體來評估裝置功能，例如訊號偵測、等化設定、Tx 輸出設定、EEPROM 檔案產生及其他暫存器功能。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| FCCSP (ABM) | 101 | Ultra Librarian |
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