Current-feedback versus voltage feedback amplifiers: history, insight and relationships

Author

Toumazou, Chris ; Payne, Alison ; Lidgey, John

Author_Institution

Dept. EE, Imperial Coll., London, UK

fYear

1993

fDate

3-6 May 1993

Firstpage

1046

Abstract

The relationship between voltage and current feedback is generalized, and it is shown that current feedback operational amplifiers and current conveyors are all part of the same family. Some early ideal amplifiers concepts such as the `Nullor´ and `Universal´ amplifier are reviewed, together with the relationship between current conveyor topologies in the light of advanced bipolar junction transistor (BJT) process technology. The new commercial LTP CCII01, 100 MHz precision dual current conveyor and its application as a universal hybrid amplifier structure are reported

Keywords

analogue integrated circuits; bipolar integrated circuits; current conveyors; feedback amplifiers; operational amplifiers; 100 MHz; LTP CCII01; advanced BJT process technology; bipolar junction transistor; current conveyor topologies; current feedback amplifiers; op amps; operational amplifiers; or; precision dual current conveyor; universal hybrid amplifier structure; voltage feedback amplifiers; Circuit topology; Educational institutions; Feedback amplifiers; History; Impedance; Operational amplifiers; Power amplifiers; Power engineering and energy; Transconductance; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-1281-3

Type

conf

DOI

10.1109/ISCAS.1993.393913

Filename

393913