Autor:	C. Morandi, Andrea Boni, Ing. Davide Vecchi
Rok vydání:	2003
Předmět:	Engineering Total harmonic distortion Asymmetric digital subscriber line business.industry Amplifier Line driver Electrical engineering Signal Surfaces Coatings and Films Power (physics) Hardware and Architecture Interfacing Linearization Signal Processing Electronic engineering business
Zdroj:	Analog Integrated Circuits and Signal Processing. 34:59-69
ISSN:	0925-1030
DOI:	10.1023/a:1020338401484
Popis:	This paper presents the design of a high-efficiency line driver for central-office ADSL modems. This driver is a modification of the conventional class-G architecture already in use for hi-fi audio applications and it is based on two amplifiers operating in parallel and powered by different power supplies (± 5 V and ±12 V). The low-voltage amplifier is active with low-level input signal, while the high-voltage amplifier is used for processing the peaks of the DMT signal. By means of this solution and by properly interfacing the two amplifiers, high efficiency is achieved while maintaining a harmonic distortion similar to the one achieved by conventional class-AB schemes and compatible with the ADSL requirements. The circuit was designed in a 0.8-µm BCD technology.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a5ae85dc4fa07a1f27d07df3906c9f11 https://doi.org/10.1023/a:1020338401484 Zobrazit plný text záznamu Full text from SpringerLink