Electronics Letters · 1995 · 85 citations · 4 references
EngineeringElectrical EngineeringCircuit TheoryMicroelectronicsSemiconductor DevicesCmos Circuit DesignComplementary Metal-oxide-semiconductor TechnologyIntegrated Circuit DesignLinear Circuit AnalysisSubthreshold Circuit DesignTransistor BiasingCmos Differential AmplifiersDifferential Pair DesignLinear RangeSubthreshold Analog Circuit DesignSubthreshold Cmos DesignTransconductanceTransconductor Design
Three schemes for linearising the transconductance of the basic differential pair in subthreshold CMOS are examined: (i) multiple asymmetric differential pairs, (ii) source degeneration via symmetric diffusors, and (iii) source degeneration via a single diffusor. Using a maximally flat optimising criterion, the linear range of the basic differential pair can be increased by 4–8 times.
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