Electronics Letters · 2011 · 27 citations · 4 references
EngineeringElectrical EngineeringAnalog ElectronicsMicroelectronicsSemiconductor DevicesAnalog Integrated CircuitsAnalog IntegrationCmos Circuit DesignDifferential AmplifiersLow-noise Circuit DesignMixed-signal Integrated Circuit DesignCmos Analog Circuit DesignCmos Analog Integrated CircuitsCmos Differential AmplifiersCmos Operational AmplifiersCmos ScalingGain AnalysisSensitivityTransconductor Design
A novel time-difference amplifier (TDA) is presented. The proposed circuit has a larger linear operation region with less sensitivity to process variations than the state-of-the-art TDAs. Two TDAs with gains of two and 20 have been simulated in a 65 nm CMOS process to validate the proposed architecture. Simulation results show less than 0.1% gain error for ±400 ps input time difference range, ten times the range of conventional TDAs. The proposed TDA consumes 740 µW from a 1 V supply.
4