New low-Voltage fully programmable CMOS triangular/trapezoidal function Generator circuit

A versatile low-voltage CMOS circuit with a triangular/trapezoidal transconductance characteristic and independently programmable slope (keeping constant height or constant width), height (keeping constant slope or constant width), and horizontal position is presented. Simulation results using Caden...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. 1, Fundamental theory and applications Fundamental theory and applications, 2005-10, Vol.52 (10), p.2033-2042
Main Authors: Kachare, M., Jaime Ramirez-Angulo, Carvajal, R.G., Lopez-Martin, A.J.
Format: Article
Language:English
Subjects:
Analog integrated circuits
analog processing circuits
Analog-digital conversion
analog-to-digital conversion
Chip formation
Circuits
CMOS
Folding
Fuzzy control
High speed
Horizontal
Linearity
Mathematical analysis
nonlinear circuits
Piecewise linear techniques
piecewise-linear (PWL) techniques
Proposals
Signal generators
Transconductance
Very large scale integration
Voltage
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Description
Summary:A versatile low-voltage CMOS circuit with a triangular/trapezoidal transconductance characteristic and independently programmable slope (keeping constant height or constant width), height (keeping constant slope or constant width), and horizontal position is presented. Simulation results using Cadence DFW-II that verify the functionality of the circuit with /spl plusmn/1.5-V supplies are presented. A chip prototype has been fabricated in a 0.5-/spl mu/m technology and experimentally verified. The circuit can find application in the implementation of high resolution, high speed folding analog-to-digital converters, in piecewise-linear approximation, and in the implementation of membership functions in analog and mixed-signal neuro-fuzzy systems.
ISSN:1549-8328
1057-7122
1558-0806
DOI:10.1109/TCSI.2005.853243