Using Floating Gate and Quasi-Floating Gate Techniques for Rail-to-Rail Tunable CMOS Transconductor Design

Floating-gate and quasi-floating gate MOS transistors can be efficiently employed to design CMOS transconductors. These transistors allow achievement of relevant features in a compact and simple way, such as rail-to-rail input range, continuous transconductance tuning, and class AB operation. This p...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. I, Regular papers Regular papers, 2011-07, Vol.58 (7), p.1604-1614
Main Authors: Miguel, J. M. A., Lopez-Martin, A. J., Acosta, L., Ramirez-Angulo, J., Carvajal, R. G.
Format: Article
Language:English
Subjects:
Analog CMOS circuits
Circuits
CMOS
Design engineering
floating-gate MOSFET
Gates
Linearity
Logic gates
low-voltage CMOS circuits
Metal oxide semiconductors
Mirrors
MOSFETs
operational transconductance amplifier
quasi-floating-gate MOSFET
Resistors
Semiconductor devices
transconductor
Transistors
Tuning
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Summary:Floating-gate and quasi-floating gate MOS transistors can be efficiently employed to design CMOS transconductors. These transistors allow achievement of relevant features in a compact and simple way, such as rail-to-rail input range, continuous transconductance tuning, and class AB operation. This paper illustrates how these techniques can be applied by employing them in the design of two transconductors, which have been fabricated in a 0.5 μm CMOS process. Measurement results confirm the advantages of the proposed approach.
ISSN:1549-8328
1558-0806
DOI:10.1109/TCSI.2011.2157782