1991 · 18 citations · 5 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSystem-on-chip DesignAnalog Integrated CircuitsAnalog IntegrationCmos Circuit DesignDigital Signal ProcessingMixed-signal Integrated Circuit DesignMixed-signal IntegrationAnalog Circuit DesignAnalog-digital ConversionAnalog-to-digital ConversionAnalog-to-digital ConvertersCmos Analog Circuit DesignCmos Analog Integrated CircuitsConvertersDynamic Range
The sigma-delta principle allows realization of ND and DIA converters with a high dynamic range in a standard CMOS process without excessive component matching requirements. 1 Accuracy is obtained at the cost of a sampling rate reduction. The speed penalty becomes less severe as the modulator order is increased. However,sigma-delta modulators with order larger than two show stability problems. For some initial conditions of the internal signals, the loop is stable while for other initial conditions, the loop oscillates.
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