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一种衬底驱动的0.5V全差分运算放大器 被引量：1

Novel 0.5V bulk driven full differential Amp
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摘要 为了满足当今对低压低功耗电路的需求,设计了一种工作在0.5 V电源电压环境的全差分运算放大器.电路使用了由衬底驱动的输入级和工作在亚阈值区的输出级,并利用交叉耦合输入晶体管的结构产生负跨导来提高增益.采用0.18μm的CMOS工艺,阈值电压约为0.5 V的器件模型.Hspice仿真结果表明:直流增益为60 dB,单位增益带宽为5.4 MHz,功耗为138μW. In oder to meet the needs of the low voltage-low power circuit application, a full differential amplifier operating at the 0.5 V power supply with bulk inputs is introduced. A prototype was designed in a standard 0.18μm CMOS process using 0.5V threshold voltage devices. This amplifier uses the bulk driven as the input stage and the subthreshold operating device as the output stage. The two stages have their own local common mode feedback. Simulation results indicate that this amplifier has a 60dB DC gain, a 5.4MHz gain-bandwidth and consumes 138μW.
作者 张洹千 杨银堂 朱樟明
机构地区 西安电子科技大学微电子学院 英飞凌科技有限公司
出处 《西安电子科技大学学报》 EI CAS CSCD 北大核心 2008年第6期1036-1040,共5页 Journal of Xidian University
基金 国家自然科学基金资助(60476046) 教育部博士点基金资助(20050701015)
关键词 模拟集成电路 衬底驱动 弱反型 运算放大器 analog integrated circuits bulk driven weak inversion operational amplifiers
分类号 TN722.57 [电子电信—电路与系统]
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参考文献9

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二级参考文献1

共引文献1

同被引文献11

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西安电子科技大学学报
2008年 第6期

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