Title :
An audio amplifier providing up to 1 Watt in standard digital 90-nm CMOS
Author :
Becker, Rolf ; Groeneweg, Willem H.
Author_Institution :
Philips Semicond. Zurich
fDate :
7/1/2006 12:00:00 AM
Abstract :
An audio amplifier in a standard 90-nm dual gate-oxide CMOS technology is designed for direct connection to the battery in a mobile phone. Special techniques have been applied to run it from a supply voltage of up to 5.5 V. The circuit does not require a dedicated supply voltage generator; it can be integrated on the same chip with the digital signal processor, and provides high output power, good power supply rejection, and good efficiency
Keywords :
CMOS integrated circuits; audio-frequency amplifiers; mobile handsets; power supply circuits; 90 nm; audio amplifiers; cellular phones; class AB amplifier; digital signal processor; dual gate-oxide CMOS technology; mobile phone; portable equipment; Batteries; CMOS technology; Cellular phones; Driver circuits; Energy consumption; Mobile handsets; Power generation; Regulators; Speech; Voltage; 90-nm CMOS; Audio amplifier; cellular phones; class AB amplifier; efficiency; portable equipment;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2006.873674
