Title :
Exact analysis of non-ideal SC networks through op amps asymptotic modeling
Author :
Puerto-Notario, A. ; Sanz-Postils, M.
Author_Institution :
ETSI Telecommun., Barcelona
Abstract :
A compact systematic analysis method to obtain closed-form expressions for the z-domain transfer functions of switched-capacitor (SC) circuits with finite gain-bandwidth (GB)-product op amps is presented. This procedure allows exact frequency analysis of general SC circuits without imposing any restriction in the ratio between GB and clock frequencies and, is based on the modeling of each op amp by a suitable SC subcircuit with its own clock frequency, which is made to tend toward infinity
Keywords :
active networks; network analysis; operational amplifiers; switched capacitor networks; transfer functions; SC networks; active circuits; asymptotic modeling; closed-form expressions; compact systematic analysis method; exact frequency analysis; finite gain-bandwidth product; nonideal networks; op amps; switched-capacitor; z-domain transfer functions; Analytical models; Circuit analysis; Circuit simulation; Clocks; Equations; Frequency; Operational amplifiers; Switching circuits; Transfer functions; Voltage;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo
DOI :
10.1109/ISCAS.1988.15442
