Importance

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Abstract

A composite MOS transistor device for a semiconductor integrated circuit includes at least a pair of MOS transistors, or first and second MOS transistors, placed on the same board. The first and second MOS transistors are made up of first and second groups of equally divided transistors with an equal gate width, respectively. These divided transistors are arranged in parallel to each other in the gate longitudinal direction. The divided transistors of these groups are arranged such that the sum of coordinates of respective gates, measured from a centerline, is equalized between these groups along the gate longitudinal direction. Since the sum of errors of respective gates along the length thereof becomes zero in each group of divided transistors, the current difference between the two MOS transistors can be eliminated.

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First Claim