A SWITCHED-CAPACITOR FILTER HAVING VERY-LOW SENSITIVITY TO CAPACITANCE RATIO ERRORS AND TO FINITE AMPLIFIER GAINS

Authors
PETRAGLIA A MONTEIRO MAM
Citation
A. Petraglia et Mam. Monteiro, A SWITCHED-CAPACITOR FILTER HAVING VERY-LOW SENSITIVITY TO CAPACITANCE RATIO ERRORS AND TO FINITE AMPLIFIER GAINS, IEEE transactions on circuits and systems. 2, Analog and digital signal processing, 45(7), 1998, pp. 890-894
Citations number
6
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE transactions on circuits and systems. 2, Analog and digital signal processing → ACNP
ISSN journal
10577130
Volume
45
Issue
7
Year of publication
1998
Pages
890 - 894
Database
ISI
SICI code
1057-7130(1998)45:7<890:ASFHVS>2.0.ZU;2-J
Abstract
A number of circuit topologies have been proposed for the low sensitiv ity switched-capacitor filters. One such approach is based on a parall el connection of two allpass sections so that low sensitivity with res pect to capacitance ratios is achieved. An improved version of that im plementation is proposed in this brief, resulting in a structure that has very low sensitivity to capacitance ratio errors and to operationa l amplifier finite gains. These properties have been verified by compu ter simulations, also included in the paper.