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IEICE TRANSACTIONS on transactions

Highly-Linear Canonical MOSFET-Capacitor Filters

Shigetaka TAKAGI, Nobuo FUJII, Takeshi YANAGISAWA

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Summary :

Continuous-time MOSFET-capacitor filters have quite a serious problem, that is, MOS transistors' nonlinearity drastically reduces the filters' dynamic ranges. Czarnul proposed an MOS resistive circuit with high degree of linearity and solved this problem. The method, however, requires two capacitors for each integrator. Consequently, the chip area and manufacturing cost will increase. This paper proposes a new single capacitor integrator which can cancel the nonlinearity of transistors. The integrator is applied to a canonical continuous-time filter synthesis with high linearity. A total harmonic distortion less than 0.33% is obtained by SPICE analysis.

Publication
IEICE TRANSACTIONS on transactions Vol.E71-E No.6 pp.562-566
Publication Date
1988/06/25
Publicized
Online ISSN
DOI
Type of Manuscript
PAPER
Category
Analog Signal Processing

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