Title :
Design and testing of a GaAs switched capacitor filter
Author :
Toumazou, C. ; Haigh, D.G. ; Harrold, S.J. ; Steptoe, K. ; Sewell, J.I. ; Bayruns, R.
Author_Institution :
Dept. of Electr. Eng., Imperial Coll., London, UK
Abstract :
A general method for the optimization of a gallium arsenide (GaAs) switched capacitor (SC) filter circuit for maximum switching frequency is presented. An analysis of the settling time of an ideal transconductance amplifier in the context of an SC circuit is given. This is related to the settling behavior of a real amplifier, and its characterization procedure. The optimization of the SC circuit, whereby load capacitances are introduced to maintain optimum settling behavior in all switching states, is described. Detailed measurements for an optimized filter circuit are given
Keywords :
III-V semiconductors; active filters; gallium arsenide; integrated circuit testing; linear integrated circuits; monolithic integrated circuits; network synthesis; switched capacitor filters; GaAs; SC circuit; characterization procedure; ideal transconductance amplifier; load capacitances; maximum switching frequency; monolithic IC; optimization; real amplifier; settling time; switched capacitor filter; testing; Band pass filters; Capacitors; Design methodology; Educational institutions; Gallium arsenide; Optimization methods; Switching circuits; Switching frequency; Testing; Transconductance;
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
DOI :
10.1109/ISCAS.1990.112598
