基于改进的电流传送器的模拟乘法器设计!.pdfVIP

第35卷摇 第3期 吉林 大学学报 ( 息科 学版) Vol.35摇 No.3 2017年5月 Journal ofJilinUniversity (Information ScienceEdition) May2017 文章编号:1671鄄5896(2017)03鄄0229鄄06 基于改进的电流传送器的模拟乘法器设计 王春悦,梁摇 潇,石文孝 (吉林大学 通信工程学院,长春 130012) 摘要:为优化四象限模拟乘法器的电路性能,以满足现代模拟信号处理电路高频低噪的应用要求,提出了一种新 型低压四象限模拟乘法器。 该乘法器以基于改进的电流传送器(MDDCC:Modified Differential Difference Current Conveyor)的模拟平方器为基本电路,采用台湾积体电路制造公司的0.18 滋m CMOS工艺的PSPICE(Personal SimulationProgramwith Integrated Circuit Emphasis)计算机软件进行仿真。 仿真结果表明,该四象限乘法器具有良 好线性,输入电压的范围为-0.1V~+0.1V,截止频率为451.307 MHz,当输入电压峰值为100 mV时,输出噪声 电压小于150nV。 与已有乘法器比较,该乘法器电路具有较好的线性特性以及较高的截止频率和带宽,输出噪声 电压有所减少,在高频信号处理系统中性能更优。 关键词:集成电路;模拟乘法器;改进的电流传送器;PSPICE仿真 中图分类号:TN713.8 文献标识码:A Four鄄Quadrant Multiplier Based on Modified Differential Difference Current Conveyor WANG Chunyue,LIANG Xiao,SHI Wenxiao (College of Communication Engineering,Jilin University,Changchun 130012,China) Abstract:In order to optimize the performance of four鄄quadrant analog multiplier, to meet the application requirements of modern analog signal processing circuit such ashigh鄄frequency andlow鄄noise,a new low voltage four鄄quadrant analog multiplier is proposed. The multiplier circuit uses the analog squarer based on MDDCC (Modified Differential Difference Current Conveyor) as a basic module. The function of multiplying circuit is confirmed by PSPICE (Personal Simulation Program with Integrated Circuit Emphasis) simulations using TSMC0.18 滋m CMOS technology. The proposed circuit has a good linearity. The range of input voltage is -0.1V~+0.1V,the -3 dBbandwidth of theproposed circuit is451.307 MHz andthe output noisevoltage is lessthan 150 nVwhen the peak value of input voltage is 100 mV. By comparingwith some available multipliers in