Electronics Letters · 2014 · 14 citations · 4 references
EngineeringComputer EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsVlsi DesignAnalog Integrated CircuitsCmos Circuit DesignDigital Integrated Circuit DesignDigital Integrated CircuitsDigital Signal ProcessingMixed-signal Integrated Circuit DesignAnalog-digital ConversionAnalog-to-digital ConversionAnalog-to-digital Converter DesignAnalog-to-digital ConvertersCmos Analog Integrated CircuitsVoltage-controlled Oscillator Design
A novel approach to use a voltage‐controlled oscillator (VCO) as the first integrator of a high‐order continuous‐time delta–sigma modulator (CT‐DSM) is presented. In the proposed architecture, the VCO is combined with a digital up–down counter to implement the first integrator of the CT‐DSM. Thus, the first integrator is digital‐friendly and hence can maximally benefit from technological scaling.
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