Title :
A free but efficient class AB two-stage operational amplifier
Author :
Ramirez-Angulo, Jaime ; Lopez-Martin, Antonio J. ; Carvajal, Ramon G. ; Galan, Juan A.
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM
Abstract :
A low voltage two stage operational amplifier with class AB output stage is presented, featuring simplicity and efficiency. 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 additional circuitry with no extra static power dissipation. Experimental verification of the characteristics of the proposed circuit is provided
Keywords :
low-power electronics; operational amplifiers; bandwidth enhancement; class AB operational amplifier; current boosting factor; Bandwidth; Boosting; Breakdown voltage; CMOS technology; Circuits; Low voltage; Modems; Operational amplifiers; Power dissipation; Threshold voltage;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693216
