中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

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电子与封装 ›› 2016, Vol. 16 ›› Issue (8): 30 -33. doi: 10.16257/j.cnki.1681-1070.2016.0094

• 电路设计 • 上一篇    下一篇

一种应用于DDS 14位1 GS/s电流舵型DAC的设计

杨俊浩,张甘英,张 涛   

  1. 中国电子科技集团公司第58研究所,江苏无锡 214035
  • 收稿日期:2016-04-29 出版日期:2016-08-20 发布日期:2016-08-20
  • 作者简介:杨俊浩(1988—),男,江苏溧阳人,硕士,助理工程师,现从事数模混合集成电路设计工作。

Design of 14-bit 1 GS/s Current Steering D/A Converter for DDS Application

YANG Junhao,ZHANG Ganying,ZHANG Tao   

  1. China Electronics Technology Group Corporation No.58 Research Institute,Wuxi 214035,China
  • Received:2016-04-29 Online:2016-08-20 Published:2016-08-20

摘要: 设计了一种基于SMIC 0.13 μm CMOS工艺的14位1 GS/s分段式电流舵型DAC。该DAC采用6+8的分段结构,1.2 V/3.3 V双电源供电,满摆幅输出电流为20 mA。采用两级行列温度计译码结构、输出形式可调开关驱动电路以及四开关结构,应用于直接数字频率合成器中。线性度性能满足指标要求,DNL≤1LSB,INL≤1.5LSB。

关键词: 分段式, 电流舵, 数模转换器, 直接数字频率合成器

Abstract: A 14-bit 1 GS/s current-steering DAC manufactured in SMIC 0.13 μm CMOS is presented in the paper.The 6+8 segmented architecture consists of 6 thermometer decoded MSBs and 8 binary decoded LSBs. The full-scale current output is 20 mA with 1.2 V/3.3 V dual power supply.Two-level logic decoder,switch driver circuits with configurable output form and a special quad switch circuit are designed for the DDS application.DNL is less than 1 LSB and INL is less than 1.5 LSB.

Key words: segment, current-steering, digital-to-analog converter(DAC), direct digital synthesizer(DDS)

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