一种具有预驱动电路的低抖动LVDS驱动器  

A Low Ringing LVDS Driver with Pre-Driver Circuit

作　　者：吴付豪[1,2] 郭良权[1,2] 

机构地区：[1]江南大学物联网工程学院,江苏无锡214122 [2]中国电子科技集团公司第58研究所,江苏无锡214035

出　　处：《微电子学》2012年第2期183-186,共4页Microelectronics

基　　金：国家核高基项目(2009ZX01034-001-002-003)

摘　　要：传统LVDS驱动器由于电源不稳定、驱动器与传输线之间阻抗不匹配等不良因素的影响,输出波形会出现抖动,质量下降。在传统LVDS驱动器的基础上,设计了一种新颖的LVDS驱动电路。该电路采用预驱动技术,控制输出电压的翻转和减少总输入电容,输出波形较为平滑。采用0.18μm工艺对电路进行仿真。结果显示,电路输出波形摆幅为0.345V,输出共模电压为1.17V,总输入电容为72fF。A novel LVDS driver was presented based on traditional LVDS driver,which had ringing output waveform and degraded quality,due to some imperfect factors,such as unstable supply voltage and impedance mismatch between driver and transmission line.A new LVDS driver circuit was designed,in which pre-driver was used to control output voltage slew and reduce total input capacitance.Results from simulation in 0.18 μm process showed that the circuit had an output voltage swing of 0.345 V,a common mode voltage of 1.17 V,and a total input capacitance of 72 fF.

关 键 词：低电压差分信号 预驱动电路 驱动器 低抖动 低电容 

分 类 号：TN47[电子电信—微电子学与固体电子学]