Thousand and one improvements on current operational amplifiers

Author

Mucha, Igor

Author_Institution

Dept. of Microelectron., Tech. Univ. of Brno, Czech Republic

Volume

5

fYear

1994

fDate

30 May-2 Jun 1994

Firstpage

533

Abstract

This paper presents a number of possibilities to improve the performance of main building blocks of current operational amplifiers. Three methods of lowering the input impedance of current buffers are described. Further, enhancements in the performance of the output stages, in order to obtain multiple output terminals as well as high voltage ranges and high output impedances available at the output terminals, are shown. Finally, a new current operational amplifier architecture suitable for low-power designs is presented

Keywords

buffer circuits; differential amplifiers; electric impedance; feedback amplifiers; operational amplifiers; current buffers; current operational amplifiers; high output impedances; high voltage ranges; input impedance reduction; low-power designs; multiple output terminals; opamp architecture; output stage performance enhancement; Differential amplifiers; Impedance; Joining processes; Microelectronics; Negative feedback; Operational amplifiers; Proposals; Signal processing; Transconductance; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-1915-X

Type

conf

DOI

10.1109/ISCAS.1994.409430

Filename

409430