Title :
First-order, switched-capacitor, low-pass filter implemented with GaAs insulated-gate FET switches
Author :
Luck, J. ; Swanson, J.G.
Author_Institution :
Dept. of Electron. & Electr. Eng., King´s Coll. London, UK
Abstract :
The application of the GaAs insulated-gate FET in switched-capacitor circuits is demonstrated. This is achieved by constructing a first-order, switched-capacitor, low-pass filter from monolithic GaAs IGFET switches and discrete capacitors. Hysteresis in the FET characteristic is shown to be unimportant. FET switching is shown to be independent of the absolute level of the switching signal.
Keywords :
III-V semiconductors; active filters; gallium arsenide; insulated gate field effect transistors; low-pass filters; switched capacitor filters; GaAs; IGFET; discrete capacitors; first-order filters; insulated-gate FET switches; low-pass filter; switched-capacitor circuits; switching signal;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19901186
