基于InP HBT工艺的12位8GSps超高速数模转换器设计OA北大核心CSCDCSTPCD
Design of 12-bit 8GSps ultra high speed DAC in InP HBT technology
设计了一种基于0.7μm的InP HBT工艺设计的12位8GSps的电流舵型数模转换器(DAC).采用双采样技术,将输出采样率提高为时钟频率的两倍.并且将双采样开关与电流开关分离以减小码间串扰.借鉴常开电流源法改进了电流源开关结构.新的结构增大了输出阻抗和稳定性,抑制了谐波失真,提高了芯片动态性能.通过仿真结果得到,这款芯片功耗2.45W,实现了0.4 LSB的微分非线性误差(DNL)和0.35 LSB的积分非线性误差(INL).低频下无杂散动态…查看全部>>
A 12bit 8GSps current-steering digital-to-analog converter (DAC) based on a 0.7μm InP HBT process was designed. A double-sampling technology was adopted to increase the sampling rate to twice the clock frequency. Besides, the double-samplingswitch and current switch were separated to decrease the inter-symbol-interference. A "keep on current" method was used for reference to improve the architecture of current switch. The new architecture enlarged output imp…查看全部>>
叶庆国;张有涛;李晓鹏;张翼
南京电子器件研究所,江苏 南京 210016南京国博电子有限公司,江苏 南京 210016南京电子器件研究所,江苏 南京 210016南京国博电子有限公司,江苏 南京 210016
信息技术与安全科学
超高速数模转换器InPHBT双采样技术无杂散动态范围总谐波失真(THD)电流舵
ultra-high-speed digital-to-analogconverterIn PHBTdouble-sampling technologyspurious-free-dynamic-range (SFDR)total-harmonic-distortion (THD)current steering
《电子元件与材料》 2018 (1)
77-83,7
南京邮电大学科研基金(NY213076NY215138)东南大学毫米波国家重点实验室开放项目(K201727)
评论