Piecewise linear-in-dB variable gain amplifier to enhance integral nonlinearity

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概要

• 論文の詳細を見る

• A new technique to improve the integral nonlinearity of the "linear-in-dB" variable gain amplifier (VGA) by adopting a piecewise linear transfer curve rather than a single curve is presented. The conventional single curve which is the first-order approximation of the exponential function yields bigger deviation errors as the gain control code advances. The integral nonlinearity (INL) of the proposed piecewise linear curve can be managed to be smaller because one of divisional curves moves to another before the deviation becomes prominent. A generic circuit schematic without chip size overhead is suggested with its future expansion in mind, and a design in a 0.35µm CMOS process under 3.3V supply is proposed and verified.

• The Institute of Electronics, Information and Communication Engineersの論文

著者

• Nam Jeong-Kwon

  Department of Electronics Engineering, Graduate School, Kookmin University

• Kim YooSung

  Department of Electronics Engineering, Graduate School, Kookmin University

• Kim Daejeong

  Department of Electronics Engineering, Graduate School, Kookmin University

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• Piecewise linear-in-dB variable gain amplifier to enhance integral nonlinearity

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