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The DS125BR800A is an extremely low-power high-performance multi-protocol repeater/redriver designed to support eight channels of PCIe, SAS, and other high-speed interface serial protocols up to 12.5 Gbps. The receiver's continuous time linear equalizer (CTLE) provides a boost of up to +30 dB at 6.25 GHz (12.5 Gbps) in each of its eight channels and is capable of opening an input eye that is completely closed due to inter symbol interference (ISI) induced by interconnect medium such as 30in+ backplane traces or 8m+ copper cables, hence enabling host controllers to ensure an error free end-to-end link. The strong linear equalization maximizes interconnect channel extension when the DS125BR800A is placed with the majority of channel loss on the devices input side. Adjustable transmit de-emphasis and output voltage amplitude help to compensate for the remaining channel attenuation on the output side.
When operating in SAS-3 and PCIe Gen-3 mode, the DS125BR800A transparently allows the host controller and the end point to optimize the full link and negotiate transmit equalizer coefficients. This seamless management of the link training protocol ensures system level interoperability with minimum latency. With a low power consumption of 65 mW/channel (typ) and option to turn-off unused channels, the DS125BR800A enables energy efficient system design. A single supply of 3.3 V or 2.5 V is required to power the device.
The programmable settings can be applied easily via pins, software (SMBus or I2C) or loaded via an external EEPROM. When operating in the EEPROM mode, the configuration information is automatically loaded on power up, which eliminates the need for an external microprocessor or software driver.
| 重要文件 | 類型 | 標題 | 格式選項 | 日期 |
|---|---|---|---|---|
| * | Data sheet | DS125BR800A Low-Power 12.5-Gbps 8-Channel (Unidirectional) Repeater With Input E datasheet | 2013年 11月 5日 | |
| Application note | Extend reach with Ethernet Redrivers and Retimers for 10G-12.5G Applications (Rev. A) | 2023年 1月 31日 | ||
| Technical article | Differential pairs: how an equalizer solves insertion-loss impairment | PDF | HTML | 2016年 1月 12日 | |
| Application note | Understanding EEPROM Programming for High Speed Repeaters and Mux Buffers | 2014年 10月 9日 |
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Our SigCon Architect utility tool provides a simple-to-use and robust system for interaction with several different high-speed signal conditioning TI devices. This software provides an interactive GUI for supported devices to access device features through SMBus and SPI communications.
SigCon (...)
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| WQFN (NJY) | 54 | Ultra Librarian |
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。