IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Special Section on Analog Circuit Techniques and Related Topics
Capacitance Reduction Technique for Switched-Capacitor Circuits Based on Charge Distribution and Partial Charge Transfer
Retdian NICODIMUSShigetaka TAKAGI
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2011 Volume E94.A Issue 2 Pages 625-632

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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 applicable to 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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© 2011 The Institute of Electronics, Information and Communication Engineers
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