A reduction in the number of active components used in transconductance grounded capacitor filters

Date

1990

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Source Title

Proceedings of the International Symposium on Circuits and Systems, IEEE 1990

Print ISSN

0271-4310

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IEEE

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Pages

2276 - 2278

Language

English

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Conference Paper

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Abstract

The number of active components in transconductance grounded capacitor filters is reduced. This reduction is possible in the case where capacitor loops and/or inductor cutsets exist in LC-ladder prototype. A more significant reduction is obtained in the OTA-C (operational transductance amplifier-capacitor version. The number of OTAs is reduced to 7 from 13 while the total capacitance value remains intact. It is also important to note that all transconductance elements or OTAs are identical except possibly one. The only drawback of this reduction is implementation of some floating capacitors instead of all grounded capacitors.

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