A 610-mW zero-overhead class-G full-rate ADSL-CO line driver

Maclean, K.; Corsi, M.; Hester, R.K.; Quarfoot, J.; Melsa, P.J.W.; Halbach, Robert L.; Kozak, C.; Hagan, T.

doi:10.1109/jssc.2003.818574

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…The class-I is actually a kind of envelop tracking amplifier, to which has been introduced a RF power amplifier and an ADSL line driver as in Refs. [8,9].…”

Section: Introductionmentioning

confidence: 99%

High efficiency class-I audio power amplifier using a single adaptive supply

Peng

Shanshand

et al. 2012

J. Semicond.

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A high efficiency class-I linear audio power amplifier (PA) with an adaptive supply is presented. Its efficiency is improved by a dynamic supply to reduce the power transistors' voltage drop. A gain compression technique is adopted to make the amplifier accommodate a single positive supply. Circuit complicity and chip area are reduced because no charge pump is necessary for the negative supply. A common shared mode voltage and a symmetric layout pattern are used to minimize the non-linearity. A peak efficiency of 80% is reached at peak output power. The measured THDCN before and after the supply switching point are 0.01% and 0.05%, respectively. The maximum output power is 410 mW for an 8 speaker load. Unlike switching amplifiers, the class-I amplifier operates as a linear amplifier and hence has a low EMI. The advantage of a high efficiency and low EMI makes the class-I amplifier suitable for portable and RF sensitive applications.

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“…The class-I is actually a kind of envelop tracking amplifier, to which has been introduced a RF power amplifier and an ADSL line driver as in Refs. [8,9].…”

Section: Introductionmentioning

confidence: 99%

High efficiency class-I audio power amplifier using a single adaptive supply

Peng

Shanshand

et al. 2012

J. Semicond.

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show abstract

“…Class G amplifier has many applications. These include data transmission line [12][13][14], active magnetic bearing [15] and audio system [16]. This thesis emphasizes on the audio application.…”

Section: Supply Rails Generatormentioning

confidence: 99%

Design of a class G audio amplifier

Zhang¹

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I hereby declare that the material contained in my thesis is original work performed by me under the guidance and advice of my supervisor and has not been previously published in whole or in part in any print or electronic format except where due Author's publication is made in the thesis itself. I certify that, to the best of my knowledge, my thesis does not infringe upon anyone's copyright nor violate any proprietary rights. And any ideas, techniques, quotations, or any other material from the work of other people included in my thesis, published or otherwise, are fully acknowledged in accordance with the standard referencing practices. I declare that this is a true copy of my thesis, and this thesis has not been submitted for a higher degree to any other University or Institution.

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Class G/H Line Drivers for xDSL

Pierdomenico

2003

Analog Circuit Design

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A 610-mW zero-overhead class-G full-rate ADSL-CO line driver

Cited by 6 publications

References 5 publications

High efficiency class-I audio power amplifier using a single adaptive supply

High efficiency class-I audio power amplifier using a single adaptive supply

Design of a class G audio amplifier

Class G/H Line Drivers for xDSL

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