A Low Temperature Sensitivity Switched-Capacitor Current Reference

Concepts

EngineeringComputer EngineeringElectrical EngineeringMicroelectronicsSemiconductor DevicesThermal AnalysisCmos Circuit DesignCurrent-voltage CharacteristicsDevice ModelingIntegrated Circuit DesignTemperature ControlTemperature RegulationSwitched-capacitor Circuit DesignSwitched-capacitor CircuitsTemperature Sensitivity

Abstract

Abstract- A current reference with low temperature sensitivity based on a switched-capacitor technique has been developed. The implementation is targeted for a 0.18µ CMOS process. HSPICE simulations using level 49 models valid over a wide temperature range were used to verify the design. The simulation results predict variations of less than 0.029 % over a temperature range of –40 °C to 125 °C.. 1

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