基于电流选择器预加重的CML驱动电路设计
PDF下载 (608)张亚伟,周利强,杨甜军,陈伟伟 *.基于电流选择器预加重的CML驱动电路设计[J].宁波大学学报(理工版),2017,30(2):66-71.DOI:
ZHANG Ya-wei,ZHOU Li-qiang,YANG Tian-jun,CHEN Wei-wei *.Design of a pre-emphasis driving circuit using CML with current selectors[J].Journal of Ningbo University(Natural Science & Engineering Edition),2017,30(2):66-71.DOI:
| Title: | Design of a pre-emphasis driving circuit using CML with current selectors |
| 作者: | 张亚伟, 周利强, 杨甜军, 陈伟伟 * |
| Author(s): | ZHANG Ya-wei, ZHOU Li-qiang, YANG Tian-jun, CHEN Wei-wei * |
| 关键词: | 硅基电光调制器; PIN结; 预加重; 电流模逻辑; 低压差分信号预加重 |
| Keywords: | silicon electro-optic modulator; PIN diode; pre-emphasis; current mode logic; low voltage differential signaling |
| 分类号: | TN256; TN491 |
| 文献标识码: | A |
| 摘要: | 为提升基于PIN电学结构载流子注入式硅基电光调制器性能, 采用TSMC 0.18μm CMOS工艺设计一种新型预加重驱动电路. 该电路采用电流模逻辑(CML)结构, 并引入低压差分信号(LVDS)型电流选择器, 在实现提升响应速度和工作带宽的同时, 降低整体平均功耗. 仿真结果表明: 基于PIN电学结构载流子注入式硅基电光调制器的电压响应时间同时受预加重驱动信号过冲幅度和持续时间影响. 当预加重驱动信号过冲幅度和持续时间分别取值为2V和0.2ns时, 基于PIN电学结构载流子注入式硅基电光调制器的电压响应时间缩减了16.7%, 工作带宽扩展至4.34倍, 且根据不同的开关活动性需求, 平均功耗最高降低了60%. |
| Abstract: | In this paper, a new pre-emphasis driving circuit is designed with the 0.18 ?m TSMC CMOS technique to improve the performance of PIN-diode-based silicon electro-optic modulator. The pre-emphasis circuit adopts the Current Mode Logic (CML) in which a Low Voltage Differential Signaling (LVDS) module is engineered to act as a current selector so as to achieve high-speed operation with broadband and low power consumption. The simulation results show that the electrical response time of PIN-diode-based silicon electro-optic modulator depends on the overshoot amplitude and overshoot duration of the pre-emphasis driving signal. When both values of an overshoot amplitude and an overshoot duration are set to be 2V and 0.2ns respectively and driven by the proposed pre-emphasis circuit, the electrical response time of PIN-diode-based silicon electro-optic modulator is reduced by 16.7%, and the operating bandwidth is nearly 4.34 times the intrinsic bandwidth. In addition, judged by the varying requirements for the switching activity, the average power consumption can be reduced by 60% at most. |
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| 备注/Memo: | 收稿日期: 2016－06－21. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（61307071）; 教育部高等学校博士学科点专项科研基金（20133305120004）; 浙江省科技厅公益性技术应用研究计划项目（2013C31083）. 第一作者: 张亚伟（1990－）, 男, 山东曲阜人, 在读硕士研究生, 主要研究方向: 硅基光电集成. E-mail: 543716900@qq.com *通信作者: 陈伟伟（1986－）, 女, 浙江温州人, 副教授, 主要研究方向: 硅基光电子. E-mail: chenweiwei@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
