Design of Low-Distortion MOS OTA Based on Cross-Coupled Differential Amplifier and Its Application for Active Filters (Special Section on High-Performance MOS Analog Circuits)
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概要
- 論文の詳細を見る
This paper presents a design of low-power CMOS OTA-C filters suitable for on-chip integration of advanced monolithic system LSIs that have analog I/O and digital signal processing capability. First, we discuss the distortion of MOS cross-coupled circuits which have a quite low distortion when the MOS FETs have the square law characteristics. Considering the nonidealities of MOS FET, however, we find that the trird harmonic component of signal dominates the total harmonic distortion (THD) of the cross-coupled pair circuit. We propose a new architecture to reduce the 3rd harmonic component. Low distortion operational transconductance amplifiers (OTA) which consist of the proposed low distortion cross-coupled pair are applied to the realization of OTA-Capacitor filters. The SPICE simulation shows that the THD of the filter is 0.0047% and the power dissipation is 22.6 mW.
- 社団法人電子情報通信学会の論文
- 1994-02-25
著者
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Hotta Masao
Central Research Laboratory Hitachi Ltd.
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FUJII Nobuo
Faculty of Engineering, Tokyo Institute of Technology
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Ono Koichi
Central Research Laboratory, Hitachi, Ltd.
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Takagi Shigetaka
Faculty of Engineering, Tokyo Institute of Technology
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Takagi Shigetaka
Faculty Of Engineering Tokyo Institute Of Technology
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Ono Koichi
Central Research Laboratory Hitachi Ltd.
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Fujii Nobuo
Faculty Of Engineering Tokyo Institute Of Technology
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