Title :
Voltage-mode MOSFET-C filters using operational transresistance amplifiers (OTRAs) with reduced parasitic capacitance effect
Author :
Chen, J.-J. ; Tsao, H.W. ; Liu, S.-I.
Author_Institution :
Dept. of Electromc Eng., Lung-hwa Inst. of Technol., Taoyuan, Taiwan
fDate :
10/1/2001 12:00:00 AM
Abstract :
The MOSFET-C integrator with reduced parasitic capacitance effect using operational transresistance amplifiers is proposed and experimental results are demonstrated. The bandwidths of these circuits are independent of their gains. The required capacitors are smaller than those described in previous work. Two new configurations of universal biquad filters based on these circuits are presented. A second-order bandpass filter, constructed using universal biquad filters, and a third-order Chebyshev lowpass filter, with 1 dB passband ripple, are breadboarded. Measured results are presented
Keywords :
Chebyshev filters; MOSFET circuits; band-pass filters; biquadratic filters; capacitance; integrating circuits; low-pass filters; operational amplifiers; MOSFET-C integrator; bandwidth; capacitor; gain; operational transresistance amplifier; parasitic capacitance; passband ripple; second-order band-pass filter; third-order Chebyshev low-pass filter; universal biquad filter; voltage-mode MOSFET-C filter;
Journal_Title :
Circuits, Devices and Systems, IEE Proceedings -
DOI :
10.1049/ip-cds:20010523
