Title :
Power Management Unit for a Ground Referenced audio amplifier for mobile phones in 65nm CMOS
Author :
Neri, Filippo ; Groeneweg, Willem ; Balucani, Marco
Author_Institution :
ST-ERICSSON, Zurich, Switzerland
Abstract :
This paper presents a fully integrated Ground Referenced Power Management Unit, made up of two linear voltage regulators and a regulated charge pump providing symmetrical power supply system for the earphone audio amplifier. Embedded in a CODEC for mobile phone application and implemented in a 65 nm CMOS technology, the paper illustrates in details the architecture and the final measurement on silicon, highlighting great performance for a high quality earphone audio amplifier successfully validated on silicon.
Keywords :
CMOS integrated circuits; audio-frequency amplifiers; mobile radio; silicon; CMOS; CODEC; charge pump; earphone audio amplifier; ground referenced audio amplifier; ground referenced power management unit; linear voltage regulator; mobile phone; silicon; size 65 nm; symmetrical power supply system; CMOS technology; Charge pumps; Energy management; Headphones; Mobile handsets; Power amplifiers; Power system management; Regulators; Silicon; Voltage;
Conference_Titel :
MELECON 2010 - 2010 15th IEEE Mediterranean Electrotechnical Conference
Conference_Location :
Valletta
Print_ISBN :
978-1-4244-5793-9
DOI :
10.1109/MELCON.2010.5475996
