Efficient synthesis of OTA network for linear analog functions

Author

Ray, Baidya Nath ; Chaudhuri, P. Pal ; Nandi, P.K.

Author_Institution

Electron. & Tele-Commun. Eng. Dept., Deemed Univ., Agra, India

Volume

21

Issue

5

fYear

2002

fDate

5/1/2002 12:00:00 AM

Firstpage

517

Lastpage

533

Abstract

This paper reports a general methodology and a computer-aided design (CAD) tool (BECAS 1.0) for synthesis of linear analog functions with a network of operational transconductance amplifiers (OTAs). Efficient analog circuits have been synthesized with the CAD tool and reported along with the simulation results. SPICE simulated results of the synthesized circuit match closely with those derived theoretically from the input transfer function. A first-order low-pass filter employing a minimum number of OTAs is used in the design as the basic building block. The number of OTAs employed to realize an analog function can be minimized in the optimization phase of the synthesis algorithm

Keywords

SPICE; all-pass filters; analogue circuits; band-pass filters; biquadratic filters; circuit CAD; circuit optimisation; high-pass filters; linear network synthesis; low-pass filters; operational amplifiers; BECAS 1.0; CAD tool; OTA network synthesis; SPICE simulated results; all-pass filter; analog circuit synthesis; band-pass filter; biquadratic filter; first-order low-pass filter; general methodology; high-pass filter; input transfer function; linear analog functions; operational transconductance amplifiers; optimization phase; simulation results; Analog circuits; Circuit simulation; Circuit synthesis; Computational modeling; Design automation; Network synthesis; Operational amplifiers; SPICE; Transconductance; Transfer functions;

fLanguage

English

Journal_Title

Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on

Publisher

ieee

ISSN

0278-0070

Type

jour

DOI

10.1109/43.998624

Filename

998624