A Linear CMOS Transconductance Element of an Adaptively Biased Source-Coupled Differential Pair Using a Quadritail Cell

Katsuji KIMURA

A Linear CMOS Transconductance Element of an Adaptively Biased Source-Coupled Differential Pair Using a Quadritail Cell

Katsuji KIMURA

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A novel circuit design technique for realizing a linear CMOS transconductance element, consisting of an adaptively biased source-coupled differential pair using a quadritail cell, is proposed. In the circuitry, the quadritail cell, which provides an output current proportional to the square of a differential input voltage, cancels a nonlinear term of the source-coupled differential pair. The circuit have a superior linearity and a wide linear input voltage range compared with the conventional linear CMOS transconductance elements because the transconductance characteristic is theoretically linear over wide input voltage range when all the MOS field-effect transistors (MOSFETs) are operating in the saturation region and the MOSFETs' behaviors are according to the relation based on the square-law characteristic. The proposed adaptively biased source-coupled differential pair was verified by using transistorarrays and discrete components on a breadboard.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E79-A No.2 pp.184-189

Publication Date: 1996/02/25

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Type of Manuscript: Special Section PAPER (Special Section on Analog Technologies in Submicron Era)

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Katsuji KIMURA, "A Linear CMOS Transconductance Element of an Adaptively Biased Source-Coupled Differential Pair Using a Quadritail Cell" in IEICE TRANSACTIONS on Fundamentals, vol. E79-A, no. 2, pp. 184-189, February 1996, doi: .
Abstract: A novel circuit design technique for realizing a linear CMOS transconductance element, consisting of an adaptively biased source-coupled differential pair using a quadritail cell, is proposed. In the circuitry, the quadritail cell, which provides an output current proportional to the square of a differential input voltage, cancels a nonlinear term of the source-coupled differential pair. The circuit have a superior linearity and a wide linear input voltage range compared with the conventional linear CMOS transconductance elements because the transconductance characteristic is theoretically linear over wide input voltage range when all the MOS field-effect transistors (MOSFETs) are operating in the saturation region and the MOSFETs' behaviors are according to the relation based on the square-law characteristic. The proposed adaptively biased source-coupled differential pair was verified by using transistorarrays and discrete components on a breadboard.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1587/e79-a_2_184/_p

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@ARTICLE{e79-a_2_184,
author={Katsuji KIMURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A Linear CMOS Transconductance Element of an Adaptively Biased Source-Coupled Differential Pair Using a Quadritail Cell},
year={1996},
volume={E79-A},
number={2},
pages={184-189},
abstract={A novel circuit design technique for realizing a linear CMOS transconductance element, consisting of an adaptively biased source-coupled differential pair using a quadritail cell, is proposed. In the circuitry, the quadritail cell, which provides an output current proportional to the square of a differential input voltage, cancels a nonlinear term of the source-coupled differential pair. The circuit have a superior linearity and a wide linear input voltage range compared with the conventional linear CMOS transconductance elements because the transconductance characteristic is theoretically linear over wide input voltage range when all the MOS field-effect transistors (MOSFETs) are operating in the saturation region and the MOSFETs' behaviors are according to the relation based on the square-law characteristic. The proposed adaptively biased source-coupled differential pair was verified by using transistorarrays and discrete components on a breadboard.},
keywords={},
doi={},
ISSN={},
month={February},}

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TY - JOUR
TI - A Linear CMOS Transconductance Element of an Adaptively Biased Source-Coupled Differential Pair Using a Quadritail Cell
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 184
EP - 189
AU - Katsuji KIMURA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E79-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 1996
AB - A novel circuit design technique for realizing a linear CMOS transconductance element, consisting of an adaptively biased source-coupled differential pair using a quadritail cell, is proposed. In the circuitry, the quadritail cell, which provides an output current proportional to the square of a differential input voltage, cancels a nonlinear term of the source-coupled differential pair. The circuit have a superior linearity and a wide linear input voltage range compared with the conventional linear CMOS transconductance elements because the transconductance characteristic is theoretically linear over wide input voltage range when all the MOS field-effect transistors (MOSFETs) are operating in the saturation region and the MOSFETs' behaviors are according to the relation based on the square-law characteristic. The proposed adaptively biased source-coupled differential pair was verified by using transistorarrays and discrete components on a breadboard.
ER -