Design of Mixed-Mode Active Filter Using Operational Transconductance Amplifiers

• Main Authors: Geng-Tang Chen, 陳耿堂
• Other Authors: 黃育賢
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/e99wmt

碩士 === 國立臺北科技大學 === 電子電腦與通訊產業研發碩士專班 === 96 === The electronic circuit was designed by the current-mode active components that have higher bandwidth, large dynamic linear range, smaller power consumption and simple structure. So high-quality analog circuit was designed by the current-mode active components that has become widely application. Because operational transconductance amplifiers could changed value of internal transconductance by the bias current. So when we design the circuits, we don’t add the resistors or consider resistor grounding. And it has the advantages of large input impedance and zero output current and large output impedance and it could replace the use of the resistors. So various active circuits was designed by the operation transconductance amplifiers that is very common. Especially if it only used operational transconductance amplifiers and capacitor that didn’t use the resistor and it could complete the design of filter. Because the operational transconductance amplifiers have above excellent features, in the frame of mixed-mode active filter, this thesis used the operational transconductance amplifiers as the active components. The circuit used TSMC 0.35μm CMOS process and simulated with HSPICE, the power supply voltage of 3V, with operational transconductance amplifiers as the active components, that designed a voltage-mode and current-mode of the generalized mixed-mode biquad filter circuit.