摘要
介绍了一种用２μｍＮ阱双层多晶硅ＣＭＯＳ工艺实现的音频低通ＭＯＳＦＥＴ－Ｃ连续时间滤波器，该滤波器实现了带内波动为０．１ｄＢ，通带截止频率３．４ｋＨｚ（可调）的传输函数特性。设计了一个具有精确输出平衡电平控制的平衡结构差分运算放大器，以实现该滤波器的平衡网络结构。
A fully integrated voice band continuous time MOSFET C filter is described,which was designed based on the technique of fully balanced networks.It is fabricated in a 2 μm CMOS n well polysilicon technology.A fifth order Chebyshev lowpass transfer function with 0.1 dB passband ripple and 3.4 kHz cutoff frequency is implemented in the filter.A fully differential operational amplifier with accurate output balancing is designed to realize its balanced network. Finally, experimental results are discussed.
出处
《微电子学》
CAS
CSCD
北大核心
1999年第1期54-57,共4页
Microelectronics
关键词
模拟滤波器
MOSFET
连续时间滤波器
设计
Analog filter,Continuous time filter,MOSFET,Balanced operational amplifier
