基于单片MO-CDCTA的高集成低功耗高阶有源低通滤波器的设计  

A high integrated and low power high-order active low-pass filter using single MO-CDCTA

作　　者：罗佳[1] 孙亮[1] 吴志光[1] Luo Jia;Sun Liang;Wu Zhiguang(Department of Mechanical and Electrical Technology,Chizhou Vocational and Technical College,Chizhou 247000,China)

机构地区：[1]池州职业技术学院机电技术系

出　　处：《电子技术应用》2019年第6期61-64,69,共5页Application of Electronic Technique

基　　金：安徽省高校自然科研重点项目(KJ2016A519);安徽省质量工程项目(2014tszy052,2014zy105)

摘　　要：针对高阶滤波器体积大和功耗高的问题,提出了一种基于多输出电流差分级联跨导放大器的电流模式n阶低通滤波电路。该电路不含任何电阻,仅使用1个新的多输出电流差分级联跨导放大器和若干接地电容,能实现任意阶低通滤波器功能。使用CADENCE进行设计和调试,电路芯片面积仅0.04mm^2,仿真功耗仅4.18mW,最大3dB截止频率500MHz。三阶巴特沃斯低通滤波器仿真与瞬态响应实验证明了理论的正确性。In order to solve problems of low integrated and high power consumption in high-order filter,a novel nth-order low pass filter employing multiple-output current differencing cascaded transconductance amplifier(MO-CDCTA)was proposed.The designed circuit does not contain any resistors.With only one multiple-output current differencing cascaded transconductance amplifier and some grounded capacitors,this circuit could achieve current transfer functions of low pass.In CADENCE software,the circuit chip was only 0.04 mm^2,the largest power consumption was only 4.18 mW,and the maximum 3 dB cutoff frequency was up 500 MHz.Moreover,third-order Butterworth filter simulation and transient response experiment results validated the theoretical analysis.

关 键 词：n阶低通滤波器 多输出电流差分级联跨导放大器 电流模式 低功耗 高集成 

分 类 号：TN43[电子电信—微电子学与固体电子学]