A 0.8 V, 2.6 mW, 88 dB Dual-Channel Audio Delta-Sigma D/A Converter With Headphone Driver
A 0.8 V third-order multibit DeltaSigma DAC with headphone driver is described. It is the first sub-1 V audio DeltaSigma DAC with integrated on-chip headphone driver. The dual-channel operation in digital section was efficiently realized with a time-interleaved single-channel hardware and extra regi...
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Published in | IEEE journal of solid-state circuits Vol. 44; no. 3; pp. 916 - 927 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
Published |
New York, NY
IEEE
01.03.2009
Institute of Electrical and Electronics Engineers The Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subjects | |
Online Access | Get full text |
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Summary: | A 0.8 V third-order multibit DeltaSigma DAC with headphone driver is described. It is the first sub-1 V audio DeltaSigma DAC with integrated on-chip headphone driver. The dual-channel operation in digital section was efficiently realized with a time-interleaved single-channel hardware and extra registers. Using novel DAC architecture suitable for low-voltage operation, the analog section requires only one opamp per channel for the D/A conversion, low-pass filtering, and driving the headphone. Two prototype ICs (separate digital and analog chips), implemented in a 0.35 mum CMOS process, achieved an 88 dB dynamic range, while consuming 2.6 mW from a 0.8 V supply. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 0018-9200 1558-173X |
DOI: | 10.1109/JSSC.2008.2012362 |