2014 · 47 citations · 9 references
EngineeringElectrical EngineeringLow-power DesignMicroelectronicsSemiconductor DevicesCmos Circuit DesignComplementary Metal-oxide-semiconductor TechnologyPower ManagementSubthreshold Circuit DesignTransistor BiasingVoltage ScalingBiasing Techniques For Subthreshold CircuitsLow-power Circuit DesignLow-power Cmos DesignSensitivitySubthreshold Cmos DesignTemperature DependencyUltra-low-power CmosUltra-low-voltage Circuit Design
This paper proposes a MOSFET-only, 20pA, 780ppm/°C current reference that consumes 23pW. The ultra-low power circuit exploits subthreshold-biased MOSFETs and a complementary-to-absolute temperature (CTAT) gate voltage to compensate for temperature dependency. The design shows low supply voltage sensitivity of 0.58%/V and a load sensitivity of 0.25%/V.
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