2002 · 62 citations · 2 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSystem-on-chip DesignAnalog Integrated CircuitsCmos Circuit DesignDigital Integrated Circuit DesignDigital Integrated CircuitsDigital Signal ProcessingMixed-signal Integrated Circuit DesignAnalog-to-digital Converter DesignAnalog-to-digital ConvertersCmos Analog Integrated CircuitsDigital Audio SystemsDynamic RangeSigma-delta Modulator Modeling
This paper presents the results of an experimental study of the effects of switching noise in a high-resolution oversampling /spl Sigma//spl Delta/ modulator. An experimental test circuit emulates the embedding of such a modulator in the same substrate as a large amount of active digital circuitry. The modulator is a third-order cascade comprising a second-order /spl Sigma//spl Delta/ stage followed by a first-order stage, both employing 1 b quantisation. A 1 /spl mu/m CMOS implementation of this design provides a dynamic range of more than 100 dB at digital audio bandwidths.
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