Novel Low-Voltage Linear OTAs Employing Hyperbolic Function Circuits (Special Section of Papers Selected from ITC-CSCC'99)

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概要

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• In this paper, new linearization techniques for low-voltage bipolar OTAs using hyperbolic function circuits are described. First, a design of an exponential-law circuit, which is a basic building block to compose hyperbolic sine and hyperbolic cosine circuits, is proposed. This circuit is simpler than the conventional circuit and is suitable for low-voltage application. Next, two linearized OTAs using the hyperbolic function circuits are presented. The transconductance is given by maximally flat approximation. Although designs of the OTAs are different, the output currents are given by the same expression. Finally, performance of the OTAs is discussed. The linear input voltage range of the proposed OTAs is almost the same as that of the conventional OTA. However, one of the proposed OTA has no more than two-thirds the power dissipation of the conventional one. The other has a superior high-frequency characteristic.

• 社団法人電子情報通信学会の論文
• 2000-06-25

著者

• Noguchi Yasuaki

  The Authors Are With The Department Of Applied Physics National Defense Academy

• MATSUMOTO Fujihiko

  The authors are with the Department of Applied Physics, National Defense Academy

• Matsumoto Fujihiko

  The Authors Are With The Department Of Applied Physics National Defense Academy

関連論文

• Novel Low-Voltage Linear OTAs Employing Hyperbolic Function Circuits (Special Section of Papers Selected from ITC-CSCC'99)

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