High frequency, precision integrators using current-conveyor compensation techniques

Author

Makris, C.A. ; Toumazou, C.

Author_Institution

Dept. of Electr. Eng., Imperial Coll. of Sci., Technol. & Med., London, UK

fYear

1990

fDate

1-3 May 1990

Firstpage

291

Abstract

Some basic ideas are presented for the application of current-mode circuits as compensation networks to reduce integrator errors for filter applications. A current-conveyor compensation network is introduced which theoretically results in significant improvements in the gain and phase errors of an integrator. It is shown that the main requirement is for the current conveyor to have a high gain-bandwidth product, and circuits which achieve this are presented. The application of the proposed compensation to integrated continuous-time and switched-capacitor integrators is briefly discussed, and key performance improvements are identified

Keywords

active filters; integrating circuits; switched capacitor filters; current-conveyor compensation techniques; current-mode circuits; filter applications; gain; gain-bandwidth product; integrated continuous-time; phase errors; precision integrators; switched-capacitor integrators; Capacitors; Current mode circuits; Educational institutions; Equations; Filters; Frequency; Operational amplifiers; Poles and zeros; Q factor; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1990., IEEE International Symposium on

Conference_Location

New Orleans, LA

Type

conf

DOI

10.1109/ISCAS.1990.112016

Filename

112016