High-performance analog-to-digital converters, digital-to-analog converters, and fractional-N frequency synthesizers based on delta-sigma (/spl utri//spl Sigma/) modulation - collectively referred to as /spl utri//spl Sigma/ data converters have contributed significantly to the high level of integration seen in recent commercial wireless handset transceivers. This paper presents a tutorial on /spl utri//spl Sigma/ data converters and their uses and implications with respect to wireless transceiver architectures.
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Ian Galton (2002) studied this question.
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