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

Shuenn Yuh Lee, Shyh Chyang Lee

研究成果: Paper

1 引文 (Scopus)

摘要

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.

原文English
頁面241-244
頁數4
出版狀態Published - 2004 十二月 1
事件2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology - Tainan, Taiwan
持續時間: 2004 十二月 62004 十二月 9

Other

Other2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology
國家Taiwan
城市Tainan
期間04-12-0604-12-09

指紋

Switched capacitor filters
Operational amplifiers
Networks (circuits)
Frequency response
Transfer functions
Electric power utilization
Capacitors

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

引用此文

Lee, S. Y., & Lee, S. C. (2004). Design of low-power switched-capacitor filter with switched-opamp technique. 241-244. 論文發表於 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan.
Lee, Shuenn Yuh ; Lee, Shyh Chyang. / Design of low-power switched-capacitor filter with switched-opamp technique. 論文發表於 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan.4 p.
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Lee, SY & Lee, SC 2004, 'Design of low-power switched-capacitor filter with switched-opamp technique', 論文發表於 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan, 04-12-06 - 04-12-09 頁 241-244.

Design of low-power switched-capacitor filter with switched-opamp technique. / Lee, Shuenn Yuh; Lee, Shyh Chyang.

2004. 241-244 論文發表於 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan.

研究成果: Paper

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AB - 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.

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Lee SY, Lee SC. Design of low-power switched-capacitor filter with switched-opamp technique. 2004. 論文發表於 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan.