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Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier

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10.1109/ISCAS.2011.5937561
 
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hdl:2117/14496

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Alarcón Cot, Eduardo JoséMés informacióMés informacióMés informació
Fernández, Diego
García Tormo, Albert
Madrenas Boadas, JordiMés informacióMés informacióMés informació
Poveda López, AlbertoMés informació
Document typeConference report
Defense date2011
PublisherIEEE
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
A mixed-signal continuous-time-processing standard CMOS implementation of an asynchronous sigma-delta modulator aimed to drive a switching amplifier operating as an on-chip wideband adaptive power supply is presented in this work. The paper first briefly discusses the fundamental limit tracking capabilities of a two-level switching signal to inband-error-free track a bandlimited signal with minimum average switching frequency. It is argued the adequacy of an adaptive asynchronous sigma-delta modulator (AAΣΔ) to approximate such fundamental characteristics. The second part of the paper presents mixed-signal design details of the various subcircuits implementing a CMOS low-power digitally-programmable AAΣΔ modulator, with 7 MHz average switching frequency operation and 1000 µm × 640 µm area occupancy.
CitationAlarcón, E. [et al.]. Continuous-time CMOS adaptive asynchronous sigma-delta modulator approximating low-fs low-inband-error on-chip wideband power amplifier. A: IEEE International Symposium on Circuits and Systems. "ISCAS 2011 the IEEE International Symposium on Circuits and Systems: proceedings". Rio de Janeiro: IEEE, 2011, p. 301-304. 
URIhttp://hdl.handle.net/2117/14496
DOI10.1109/ISCAS.2011.5937561
ISBN978-1-4244-9472-9
Publisher versionhttp://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=05937561
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  • EPIC - Energy Processing and Integrated Circuits - Ponències/Comunicacions de congressos [370]
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  • AHA - Advanced Hardware Architectures Group - Ponències/Comunicacions de congressos [31]
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