Noise-shaping modulation in high-Q SC filters

被引：0

作者：

Ausín, JL ^{[1
]}

Domínguez, MA ^{[1
]}

Duque-Carrillo, JF ^{[1
]}

Torelli, G ^{[1
]}

机构：

[1] Univ Extremadura, Dept Elect & Elect Engn, Badajoz 06071, Spain

来源：

PROCEEDINGS OF THE 2003 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOL I: ANALOG CIRCUITS AND SIGNAL PROCESSING | 2003年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low-cost tuning scheme for programmable second-order switched-capacitor filters that use partial positive feedback to achieve high Q values, is presented. In this scheme, a noise-shaping feedback coder controls the positive feedback amount in a local loop. Automatic Q-factor tuning is performed by measuring the ratio of a pair of capacitors. Simulation results considering a 0.8-mum CMOS process are presented to verify the feasibility of the proposed approach in integrated circuit design.

引用

页码：597 / 600

页数：4

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