预加重LVDS驱动器电路设计与实现  

Design and Implementation of Pre-emphasis in LVDS Driver

作　　者：王轩[1] 赖晓玲[1] 周国昌[1] 巨艇[1] 王健[1] WANG Xuan;LAI Xiaoling;ZHOU Guochang;JU Ting;WANG Jian(China Academy of Space Technology（Xi＇an）,Xi＇an 710000,China)

机构地区：[1]中国空间技术研究院西安分院,西安710000

出　　处：《空间电子技术》2018年第3期35-38,共4页Space Electronic Technology

摘　　要：针对传统LVDS驱动器在长距离、高速率下由于能量损失而导致的驱动能力不足问题,通过分析LVDS信号传输机理,设计了一款可提供第二电流源的数字预加重电路,得到了该电路在最高800 Mbps速率下的PRBS(Pseudo-Random Binary Sequence)仿真数据。研究结果表明,该电路增强了信号的高频成分,补偿了高频分量在传输过程中的衰减,提高了信号的传输距离。To solve the problem of insufficient driving ability- of traditional LVDS driver due to the energy loss at long distance and high speed transnfission, this paper analyzes the meehanisnl of LVDS and presentes a novel digital pre-emphasis with a seeondary current source. The proposed structure can work at 800 Mbps according to the PRBS （ Pseudo-Random Binary Sequence） sinmlation. It compensates and enhances the high frequency part of the signal in order to extent the transnfis- sion distance.

关 键 词：LVDS驱动器 预加重 补偿 

分 类 号：V474[航空宇航科学与技术—飞行器设计]