Current operational amplifier (COA): CMOS realization and active compensation

Authors
Awad, IA Soliman, AM
Citation
Ia. Awad et Am. Soliman, Current operational amplifier (COA): CMOS realization and active compensation, ANALOG IN C, 24(2), 2000, pp. 141-152
Citations number
10
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ANALOG INTEGRATED CIRCUITS AND SIGNAL PROCESSING
ISSN journal
09251030 → ACNP
Volume
24
Issue
2
Year of publication
2000
Pages
141 - 152
Database
ISI
SICI code
0925-1030(200008)24:2<141:COA(CR>2.0.ZU;2-W
Abstract
A new COA-CMOS realization suitable for low-power designs is presented. The proposed design features a high performance in terms of input impedance, c urrent tracking accuracy, DC offset and AC response. A new class AB output stage is used in order to enhance the slew rate as well as increase power e fficiency. The active compensation of the COA based amplifiers is also disc ussed and the adjoint network theorem is used to generate the compensated c ircuits from their voltage mode counterparts.