DS125BR820
- Low 70 mW/Channel (Typ) Power Consumption,
with Option to Power Down Unused Channels - Seamless Link Training Support
- Enables Host ASIC to Meet Front-Port Eye Mask
Requirements over Longer Reach - Advanced Configurable Signal Conditioning I/O
- Receive CTLE up to 10 dB at 6 GHz
- Linear Output Driver
- Variable Output Voltage Range up to 1200
mVp-p
- Programmable via Pin Selection, EEPROM, or
SMBus Interface - Single Supply Voltage: 2.5 V or 3.3 V
- −40°C to 85°C Operating Temperature Range
- Flow-Thru Layout in 10 mm × 5.5 mm 54-Pin
Leadless WQFN Package
The DS125BR820 is an extremely low-power high-performance repeater/redriver designed to support eight channels carrying high speed interface up to 12.5 Gbps, such as 40G-CR4, 40G-KR4, SAS/SATA, and PCIe. The receiver’s continuous time linear equalizer (CTLE) provides high frequency boost that is programmable from 3 to 10 dB at 6 GHz (12 Gbps) followed by a linear output driver. The CTLE receiver is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as board traces or twin axial-copper cables. The programmable equalization maximizes the flexibility of physical placement within the interconnect channel and improves overall channel performance.
When operating in 40G-CR4/KR4, SAS/SATA, and PCIe applications, the DS125BR820 preserves transmit signal characteristics, thereby allowing the host controller and the end point to negotiate transmit equalizer coefficients. This transparency in the link training protocol facilitates system level interoperability and minimizes latency.
The programmable settings can be applied easily via pin control, software (SMBus or I2C), or direct loading from an external EEPROM. In EEPROM mode, the configuration information is automatically loaded on power up, thereby eliminating the need for an external microprocessor or software driver.
技術文件
設計與開發
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DS125BR820EVM — DS125BR820EVM：具有等化功能的 12.5 Gbps 八通道中繼器評估模組
DS125BR820EVM – SMA 評估套件提供完整的高頻寬平台，可評估德州儀器 DS125BR820 中繼器/再驅動器的 40GbE、PCIe 和 SAS/SATA 訊號調整功能。DS125BR820EVM 可用於標準合規測試、性能評估和初始系統原型設計。用於 DS125BR820EVM 的 SMA 邊緣啟動連接器，可透過市售分接纜線、轉接器及電路板（未隨附），介接多種系統連接器類型。這種彈性的連線方式可在 TI 中繼器與第三方 ASIC/FPGA 主機板之間，實現整合式系統層級測試。
SIGCONARCHITECT-WRTE — SigCon Architect With RTE v2.0.0.8
TIDA-00417 — 雙埠 40GbE/10GbE QSFP+ 訊號調節器參考設計
這項經過驗證的參考設計為適用於前連接埠 QSFP+ 的訊號調整解決方案，支援兩個符合 40G-CR4/SR4/LR4 及 10G SFF-8431 要求的 40GbE 連接埠。此設計適用於光學和被動/主動銅纜。該設計可實現 Switch ASIC 與前連接埠 QSFP+ 之間的延伸連接，這通常是機架頂端 (ToR) 交換器的最外側連接埠或 QSFP+ 線卡的附加夾層實作所必需。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (NJY) | 54 | Ultra Librarian |
訂購與品質
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。