文章基本信息

标题：Novel Low-Power High-dB Range CMOS Pseudo-Exponential Cells
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作者：De La Cruz Blas, Carlos A. ; Lopez-Martin, Antonio
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2006
卷号：28
期号：6
页码：732-738
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：In this paper, novel CMOS pseudo-exponential circuits operating in a class-AB mode are presented. The pseudo-exponential approximation employed is based on second order equations. Such terms are derived in a straightforward way from the inherent nonlinear currents of class-AB transconductors. The cells are appropriate to be integrated in portable equipment due to their compactness and very low power consumption. Measurement results from a fabricated prototype in a 0.5 technology reveal a range of 45 dB with errors lower than dB, a power consumption of 100 , and an area of 0.01 .
关键词：VGA;pseudo-exponential circuits;low-voltage