Title :
A free but efficient low-voltage class-AB two-stage operational amplifier
Author :
Ramírez-Angulo, Jaime ; Carvajal, Ramón G. ; Galán, Juan A. ; López-Martín, Antonio
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
A simple and efficient low-voltage two-stage operational amplifier with Class-AB output stage is introduced. It has a large effective output current boosting factor (∼50) and close to a factor 2 bandwidth enhancement. This is achieved at the expense of minimum increase in circuit complexity and no additional static power dissipation. Experimental verification of the characteristics of the proposed circuit is provided.
Keywords :
analogue integrated circuits; low-power electronics; operational amplifiers; analog integrated circuits; circuit complexity; class-AB amplifiers; operational amplifiers; Bandwidth; Boosting; Breakdown voltage; CMOS technology; Circuits; Complexity theory; Current control; Low voltage; Operational amplifiers; Power dissipation; Analog integrated circuits; Class-AB amplifiers; low-voltage analog circuits; operational amplifiers;
Journal_Title :
Circuits and Systems II: Express Briefs, IEEE Transactions on
DOI :
10.1109/TCSII.2006.875320
