Ch. Chen et al., A DC current stress method to improve the voltage coefficient of resistance of the polysilicon resistor in high voltage CMOS technology, SOL ST ELEC, 44(10), 2000, pp. 1743-1746
A DC current stress method has been developed to improve the voltage coeffi
cient of resistance (VCR) of a poly silicon resistor (poly-R). The DC curre
nt stress method had been successfully applied to high voltage CMOS technol
ogy 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 develope
d. (C) 2000 Elsevier Science Ltd. All rights reserved.