一种基于CMOS CCDVCCⅡ的可编程多功能滤波器及可编程测量放大器  

A Programmable Voltage Mode Multifunction Filter and Programmable Instrumentation Amplifier Based on CMOS CCDVCCⅡ

作　　者：赵怡[1] 王卫东[1] 

机构地区：[1]桂林电子科技大学信息与通信学院,广西桂林541004

出　　处：《电子器件》2011年第1期53-56,共4页Chinese Journal of Electron Devices

基　　金：广西科学研究与技术开发计划项目资助(0731021)

摘　　要：介绍了一种新型的电调谐差分电压输入第二代电流传输器。并且用其构成一种电压模式多功能滤波器,可以获得:低通、高通、带通、带阻、全通传输函数。且这种滤波器可以通过调节电流传输器偏置电流独立改变传输函数的品质因素和固有频率。这种多功能滤波器仅仅使用两个CCDVCCⅡ、一个电阻和两个电容构成,且不需要任何元件匹配。而且,可以利用数字技术选择适当的输入信号而产生不同的传输函数。并且设计一种增益可编程的测量放大器。采用SMIC0.18工艺,用Spectre对电路进行仿真,仿真结构验证理论分析正确。A new CMOS current controlled differential voltage current conveyor is presented.A voltage mode multifunction filter was proposed based on the CCDVCCⅡ.The filter performs completely the standard functions such as low pass,high pass,band pass,band reject,all pass.The quality and pole frequency of the filter can be tuned independently by input bias current.The circuit consists of merely two CCDVCCⅡs,one resistor and two capactitors and it need not any macthing components.Futhermore,each function can be selected by suitably selecting input sigals with digital method.A programmable instrumentation amplifier was also designed by using SMIC 0.18 μm CMOS process parameters and Spectre.The simulation results agree well with the theoretical anticipation.

关 键 词：电谐差分电压输入电流传输器 电压模式多功能滤波器 测量放大器 可编程 

分 类 号：TN432[电子电信—微电子学与固体电子学]