Title :
On switch-induced distortion in switched capacitor circuits
Author :
Haigh, D.G. ; Taylor, J.T.
Author_Institution :
Dept. of Electron. & Electr. Eng., Univ. Coll., London, UK
Abstract :
Distortion in parasitic-insensitive switched-capacitor circuits is usually attributed to incomplete charging of capacitors due to finite switch on-resistance and nonlinear op-amp effects such as finite settling time. Even when these effects are made insignificant, unacceptable distortion may still result due to nonlinear charge injection during switch transitions. The authors present a preliminary analysis of this effect and, based on the analysis, ultraglow-distortion circuits are proposed and demonstrated.<>
Keywords :
electric distortion; switched capacitor networks; finite settling time; finite switch on-resistance; incomplete capacitor charging; nonlinear charge injection; nonlinear op-amp effects; parasitic insensitive circuits; switch transitions; switch-induced distortion; switched capacitor circuits; ultraglow-distortion circuits; Filters; Nonlinear distortion; Operational amplifiers; Parasitic capacitance; Switched capacitor circuits; Switches; Switching circuits; Threshold voltage; Voltage control;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15330
