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New ELIN Systems Using CMOS Transistors in Weak Inversion OperationBOZOMITU, R. G. , CEHAN, V.
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CMOS, ELIN, filters, linearity, subthreshold operation, transconductance
circuits(9), state(5), solid(4), isse(4), analog(4)
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About this article
Date of Publication: 2013-11-30
Volume 13, Issue 4, Year 2013, On page(s): 99 - 102
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2013.04017
Web of Science Accession Number: 000331461300017
SCOPUS ID: 84890229634
In this paper new ELIN systems implemented by using CMOS transistors in weak inversion operation are presented. The proposed systems exploit the exponential-law characteristics of the subthreshold CMOS transistors. New operational transconductance amplifiers in CMOS technology, providing elementary tanh and sinh/cosh functions with high accuracy are proposed. These elementary cells are used to design first order CMOS ELIN filters. For a bias current of 1A, the dynamic range of the predistorted input voltage is 220mVpp and the current consumption is about 20uA from a 3.3V supply voltage. The simulations performed in 0.18um CMOS technology confirm the theoretically obtained results.
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