2011 · 70 citations · 3 references
EngineeringElectrical EngineeringAnalog ElectronicsLow-power DesignVlsi DesignAnalog Integrated CircuitsCmos Circuit DesignDigital Integrated Circuit DesignDigital Integrated CircuitsLow-power Digital Circuit DesignMixed-signal Integrated Circuit DesignAnalog-digital ConversionAnalog-to-digital ConversionAnalog-to-digital Converter DesignAnalog-to-digital ConvertersAnti-aliasingBandwidthCmos Analog Circuit DesignCmos Analog Integrated Circuits
A highly linear calibration free VCO-based ADC uses a two-level modulator to eliminate distortion caused by tuning non-linearity of the VCO. The proposed architecture does not require a multi-level feedback DAC and eases anti-aliasing requirements. Fabricated in 90nm CMOS process, the prototype ADC achieves better than 71dB SFDR and 59.1dB SNDR in 8MHz signal bandwidth and consumes 4.3mW.
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