一种高速低功耗比较器设计  

Design of a High Speed and Low Power Comparator

作　　者：刘居敬 王海时 胡诗朋 LIU Jujing;WANG Haishi;HU Shipeng(College of Communication Engineering,Chengdu University of Information Technology,Chengdu 610225,China;College of electronic Engineering,Chengdu University of Information Technology,Chengdu 610225,China)

机构地区：[1]成都信息工程大学通信工程学院,四川成都610225 [2]成都信息工程大学电子工程学院,四川成都610225

出　　处：《成都信息工程大学学报》2021年第1期15-18,共4页Journal of Chengdu University of Information Technology

基　　金：四川省2018-2020年高等教育人才培养质量和教学改革资助项目(JG2018-523)。

摘　　要：模数转换电路的性能优化不断推进比较器电路的发展,适用于高速低功耗的比较器是集成电路设计的主要发展方向。给出一种动态比较器,使用动态预放大电路结构实现低功耗高速度比较器特性,前置放大器能够增强响应速度,同时还可以有效减小失调电压对性能造成的影响。仿真结果显示当时钟频率35M,1.5V电源电压仿真环境下比较器平均功耗82μm,精度小于1mV,失调电压小于0.5mV。The performance optimization of analog digital converter promotes the development of comparator circuit,and the comparator which is suitable for high speed and low power consumption is the main development direction at present.The dynamic comparator presented in this paper is using a dynamic preamplifier circuit structure to realize the characteristics of low power consumption and high speed comparator.The preamplifier can enhance the speed of comparator and reduce the offset voltage conditions of comparator effectively in the same time.The simulation results show that the clock frequency is 35 M,when the power supply voltage is 1.5V,average power consumption of the comparator is 82μm,the precision of comparator is less than lm V,and the offset voltage is less than 0.5mV.

关 键 词：集成电路 模数转换电路 比较器 前置放大电路 锁存器 

分 类 号：TN432[电子电信—微电子学与固体电子学]