Design of low-power switched-capacitor filter with switched-opamp technique

Shuenn Yuh Lee, Shyh Chyang Lee

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

The modified switched-capacitor biquad circuits for low-Q and high-Q structures are presented in this paper. By using the switched-opamp technique, the structures make only one active opamp in each phase without destroying their biquad functions. This idea can be applied on the implementation of high-order SC filters to save more power consumption. Meanwhile, the z-domain transfer functions for SC biquad circuits are analyzed to verify the modified structures. Finally, three types of low-Q SC biquad filters are presented as design examples. The simulation results show that the frequency responses of the general active-RC biquad circuits and the modified SC ones are much similar.

Original languageEnglish
Pages241-244
Number of pages4
Publication statusPublished - 2004 Dec 1
Event2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology - Tainan, Taiwan
Duration: 2004 Dec 62004 Dec 9

Other

Other2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology
CountryTaiwan
CityTainan
Period04-12-0604-12-09

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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