A DC current stress method to improve the voltage coefficient of resistance of the polysilicon resistor in high voltage CMOS technology
2000
Abstract A DC current stress method has been developed to improve the voltage coefficient of resistance (VCR) of a polysilicon resistor (poly-R). The DC current stress method had been successfully applied to high voltage CMOS technology and is shown to be effective in reducing the VCR of a poly-R. Applying adequate DC current stress on poly-R, the VCR of the poly-R decreases by 37% on average. In addition, the mechanism of improvement and the criteria in choosing the adequate DC stressing current are also discussed and developed.
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