四通道12位带回读功能的高压DAC设计  

A Quad,12-Bit High Voltage DAC with Readback Capability

作　　者：蒋腾霄 季烨程 苏小波[1] JIANG Tengxiao;JI Yecheng;SU Xiaobo(China Electronics Technology Group Corporation No.58 Research Institute,Wuxi Jiangsu 214072,China)

机构地区：[1]中国电子科技集团第五十八研究所,江苏无锡214072

出　　处：《电子器件》2018年第1期185-188,共4页Chinese Journal of Electron Devices

摘　　要：基于0.8μm 40 V BCD工艺,设计并实现了一款可工作于±15 V电源电压的四通道12 bit数模转换器。电路由寄存器、R-2R电阻阵列和接成单位增益模式的运算放大器构成。实测结果显示,V_(DD)=+15 V,V_(SS)=-15 V,V_(LOGIC)=+5 V,V_(REFH)=+10V,V_(REFL)=-10 V,负载RL=2 kΩ,CL=100 p F时,DAC的输出摆幅为-10 V^+10 V,微分非线性(DNL)指标为±1.2 LSB,积分非线性(INL)指标为±1.5 LSB。Based on 0.8μm 40 V BCD process,a quad 12-bit digital to analog converter with±15 V supplies is designed.The DAC consists of a resistor array,registers and amplifiers.The measurement results show that the output voltage swing of DAC is-10 V^+10 V,the DNLs are less than 0.5 LSB and the DNLs are less than 1 LSB,when V DD=+15 V,V SS=-15 V,V LOGIC=+5 V,V REFH=+10 V,V REFL=-10 V,R L=2 kΩ,C L=100 pF.

关 键 词：集成电路 数模转换器 R-2R电阻阵列 高压 微分非线性 积分非线性 

分 类 号：TN431[电子电信—微电子学与固体电子学]