Title :
NMOS-only Class-D output stages based on charge pump architectures
Author :
Maughan, Steven ; Henderson, Robert
Author_Institution :
Joint Res. Inst. for Integrated Syst., Univ. of Edinburgh, Edinburgh, UK
Abstract :
An NMOS only class-D output driver which uses charge pump techniques in a low voltage CMOS technology is presented. Compared to conventional class-D output stages, the given implementation shows a gate area reduction of 45%, resulting in efficiency improvements. The circuit has been simulated in a 0.13 mum process and is implemented using 3.3 V I/O devices. The structure does not violate any gate-oxide reliability rules.
Keywords :
CMOS integrated circuits; audio-frequency amplifiers; charge pump circuits; driver circuits; integrated circuit reliability; low-power electronics; NMOS-only class-D output driver; audio amplifier; charge pump architectures; gate-oxide reliability rules; low-voltage CMOS technology; size 0.13 mum; voltage 3.3 V; CMOS technology; Capacitance; Charge pumps; Circuit simulation; Driver circuits; Filters; Low voltage; MOS devices; MOSFETs; Systems engineering and theory;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5117973
