Title :
Novel voltage-controlled grounded resistor
Author_Institution :
Dept. of Electr. Eng., Swiss Federal Inst. of Technol., Zurich, Switzerland
Abstract :
A new voltage-controlled grounded resistor in which a MOS transistor, operating in the triode region, is linearised by connecting a second MOS transistor, which is operated in the saturation region, in parallel is presented. The simulation results show a linearity of as low as 0.6% for an input voltage up to 4 V. The implementation of nth order highpass ladder filters using the proposed resistor is presented.
Keywords :
active filters; high-pass filters; insulated gate field effect transistors; ladder networks; resistors; MOS transistor; highpass ladder filters; input voltage; linearity; saturation region; triode region; voltage-controlled grounded resistor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901093
