一种四象限14位乘法型D/A转换器设计  

Design of a Four-Quadrant 14-bit Multiplying D/A Converter

作　　者：雷郎成[1] 罗雁心 刘虹宏 杜宇彬 高炜褀 张俊 吴秋霞 付东兵[1] LEI Langcheng;LUO Yanxin;LIU Honghong;DU Yubin;GAO Weiqi;ZHANG Jun;WU Qiuxia;FU Dongbing(The 24th Research Institute of China Electronics Technology Group Corp.,Chongqing 400060,P.R.China)

机构地区：[1]中国电子科技集团公司第二十四研究所,重庆400060

出　　处：《微电子学》2022年第4期572-576,共5页Microelectronics

基　　金：国家自然科学基金资助项目(60906009);中国博士后科学基金资助项目(20090451423);重庆科委基金资助项目(CSTC2010AA2004)。

摘　　要：设计了一种14位乘法型D/A转换器。采用高3位温度计编码、低11位二进制编码的分段电流模R-2R电阻网络结构,规避了高分辨率二进制电流模R-2R电阻网络开关尺寸大、版图匹配难度大的缺点。基于混合信号CMOS工艺进行了流片,实测DNL在±0.5 LSB以内,INL在±0.8 LSB以内。该D/A转换器适用于工业控制、仪器仪表等领域。A 14-bit multiplying D/A converter was designed.A piecewise current mode R-2R resistor network structure with high 3-bit thermometer code and low 11-bit binary code was adopted to avoid the disadvantages of large switch size and difficult layout matching of high resolution binary current mode R-2R resistor network.The circuit was fabricated in a mixed signal CMOS process.The measured DNL was within±0.5 LSB,and the INL was within±0.8 LSB,which was suitable for the applications of industrial control and instrumentation.

关 键 词：乘法型D/A转换器 电流模R-2R电阻网络 薄膜电阻 激光修调 

分 类 号：TN792[电子电信—电路与系统]