Title :
Four-stage 1.5V class AB power amplifier
Author :
Loikkanen, M. ; Kostamovaara, J.
Author_Institution :
Dept. of Electr. & Inf. Eng., Oulu Univ., Finland
Abstract :
In this article a four-stage power amplifier is presented, which uses modified nested Miller compensation to stabilize the amplifier. Simulated results in a 0.35μm CMOS process are presented. Amplifier has a maximum DC output current of 42mA, and small signal bandwidth of 9.5MHz with a load 1000 Ohm|1nF, while consuming 4.6mA at quiescent operation point.
Keywords :
CMOS analogue integrated circuits; power amplifiers; 0.35 micron; 1.5 V; 1000 ohms; 42 mA; 9.5 MHz; CMOS process; class AB power amplifier; nested Miller compensation; quiescent operation point; Circuits; Equations; Feedback; Frequency; High power amplifiers; Impedance; Parasitic capacitance; Poles and zeros; Power amplifiers; Transfer functions;
Conference_Titel :
Electrotechnical Conference, 2004. MELECON 2004. Proceedings of the 12th IEEE Mediterranean
Print_ISBN :
0-7803-8271-4
DOI :
10.1109/MELCON.2004.1346779
