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Operational transconductance amplifier-based nonlinear function syntheses

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4 Author(s)
Sanchez-Sinencio, E. ; Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA ; Ramirez-Angulo, J. ; Linares-Barranco, B. ; Rodriguez-Vazquez, A.

It is shown that the operational transconductance amplifier, as the active element in basic building blocks, can be efficiently used for programmable nonlinear continuous-time function synthesis. Two efficient nonlinear function synthesis approaches are presented. The first approach is a rational approximation, and the second is a piecewise-linear approach. Test circuits have been fabricated using a 3-μm p-well CMOS process. The flexibility of the designed and tested circuits was confirmed

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Solid-State Circuits, IEEE Journal of  (Volume:24 ,  Issue: 6 )