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电流舵型D/A转换器毛刺理论及改进设计 被引量：4

Theory of Glitch and Improved Design of Current-Steering D/A Converter
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摘要 分析了高速电流舵型D/A转换器中毛刺产生的原因,提出开关对的栅信号转换速度不一致是产生毛刺的主要原因。基于这一理论,解释了输出的三个现象,进行了三个方面的改进,大幅减小了毛刺和建立时间,改善了动态参数。改进后的电路,在电流源输出为30μA、负载为70Ω时,输出电流毛刺峰值从-4.570μA减小到-1.633μA,电压毛刺面积从5.6 pV.s降到2.3 pV.s;在相同仿真条件下,D/A转换器的SFDR值上升了10 dB。 The reason for glitch in high-speed current-steering digital-to-analog converters is analized. A new theory that different speed of falling and rising control signals is the main cause for glitch is proposed. This theory is used to explain three phenomenons. Improvements are made to reduce glitch and settling time, and enhance dynamic characteristics. After improvements, the peak glitch current is reduced from -4. 570μA to -1. 633 μA, and the area of glitch falls to 2. 3 pV, s from 5.6 pV · s for 30 μA output current and 70Ω load resistance. In the same simulation environment, the spurious free dynamic range （SFDR） of the D/A converter rises to 67 dB from 57 dB.
作者 刘卫平 王向展 宁宁 杨谟华 兰中文
机构地区 电子科技大学微电子与固体电子学院
出处 《微电子学》 CAS CSCD 北大核心 2006年第2期141-144,共4页 Microelectronics
关键词 电流舵 D/A转换器 毛刺 电流开关 寄生电容 Current-steering Digital-to-annalog converter Glitch Current switch Stray capacitance
分类号 TN792 [电子电信—电路与系统]
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参考文献5

二级参考文献29

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共引文献10

同被引文献32

  • 1黄兴发,赵建明,邹铮贤.一种10 bit电流型DAC电流源晶体管的抗失配设计[J].现代电子技术,2006,29(8):110-112. 被引量：2
  • 2钟书鹏,谭年熊,沈延钊,廖青.一种12位400MHz电流开关型D/A转换器的设计[J].微电子学,2006,36(4):476-479. 被引量：5
  • 3黄姣英,何怡刚,沈芳.新型的视频自适应均衡芯片设计[J].Journal of Semiconductors,2006,27(8):1503-1507. 被引量：1
  • 4黄姣英,何怡刚,周炎涛,唐圣学,阳辉.一种CMOS视频D/A转换器的设计与应用[J].微电子学,2006,36(6):785-788. 被引量：2
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引证文献4

二级引证文献6

微电子学
2006年 第2期

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