Capacitance reduction technique for switched-capacitor circuits based on charge distribution and partial charge transfer

Retdian Nicodimus; Shigetaka Takagi

doi:10.1587/transfun.E94.A.625

Capacitance reduction technique for switched-capacitor circuits based on charge distribution and partial charge transfer

Retdian Nicodimus, Shigetaka Takagi

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This paper proposes a technique to reduce the capacitance spread in switched-capacitor (SC) filters. The proposed technique is based on a simple charge distribution and partial charge transfer which is applicableto various integrator topologies. An implementation example on an existing integrator topology and a design example of a 2nd-order SC low-pass filter are given to demonstrate the performance of the proposed technique. A design example of an SC filter show that the filter designed using the proposed technique has an approximately 23% less total capacitance than the one of SC low-pass filter with conventional capacitance spread reduction technique.

Original language	English
Pages (from-to)	625-632
Number of pages	8
Journal	IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Volume	E94-A
Issue number	2
DOIs	https://doi.org/10.1587/transfun.E94.A.625
Publication status	Published - 2011 Feb
Externally published	Yes

Keywords

Capacitance spread
Filter
Switched capacitor

ASJC Scopus subject areas

Signal Processing
Computer Graphics and Computer-Aided Design
Electrical and Electronic Engineering
Applied Mathematics

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10.1587/transfun.E94.A.625

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N2 - This paper proposes a technique to reduce the capacitance spread in switched-capacitor (SC) filters. The proposed technique is based on a simple charge distribution and partial charge transfer which is applicableto various integrator topologies. An implementation example on an existing integrator topology and a design example of a 2nd-order SC low-pass filter are given to demonstrate the performance of the proposed technique. A design example of an SC filter show that the filter designed using the proposed technique has an approximately 23% less total capacitance than the one of SC low-pass filter with conventional capacitance spread reduction technique.

AB - This paper proposes a technique to reduce the capacitance spread in switched-capacitor (SC) filters. The proposed technique is based on a simple charge distribution and partial charge transfer which is applicableto various integrator topologies. An implementation example on an existing integrator topology and a design example of a 2nd-order SC low-pass filter are given to demonstrate the performance of the proposed technique. A design example of an SC filter show that the filter designed using the proposed technique has an approximately 23% less total capacitance than the one of SC low-pass filter with conventional capacitance spread reduction technique.

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Capacitance reduction technique for switched-capacitor circuits based on charge distribution and partial charge transfer

Abstract

Keywords

ASJC Scopus subject areas

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