An Improved Universal CMOS Current-Mode Analog Function Synthesizer

Author

Atti, Muhammad Taher Abuelma ; Al-Yahia, Nawal Mansour

Author_Institution

King Fahd Univ. of Pet. & Miner., Dhahran

fYear

2007

fDate

26-28 Sept. 2007

Firstpage

580

Lastpage

583

Abstract

A CMOS integratable current-mode analog function synthesizer circuit is presented. The proposed circuit is based on approximating the required function using its sixth-order Taylor series expansion. These approximations can be implemented by adding the weighted output currents of a number of basic building blocks, built around a basic current squarer, and a constant current. The proposed circuit can simultaneously realize different mathematical functions. SPICE simulation results obtained from three nonlinear functions and demonstrating the circuit performance are included.

Keywords

CMOS analogue integrated circuits; current-mode circuits; frequency synthesizers; function approximation; nonlinear functions; SPICE simulation; analog function synthesizer; nonlinear functions; sixth-order Taylor series expansion; universal CMOS current-mode synthesizer; CMOS analog integrated circuits; Circuit synthesis; Function approximation; MOSFETs; Operational amplifiers; Piecewise linear approximation; Piecewise linear techniques; Synthesizers; Taylor series; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Circuits, 2007. ISIC '07. International Symposium on

Conference_Location

Singapore

Print_ISBN

978-1-4244-0797-2

Electronic_ISBN

978-1-4244-0797-2

Type

conf

DOI

10.1109/ISICIR.2007.4441928

Filename

4441928