Patent ID: 6429729
Filing Date: 2002-08-06
Classification: G05F

Abstract:
A semiconductor integrated circuit device, comprising:a reference voltage generating circuit, including: a first resistance group having a first element with a resistance value raised as temperature increases, and a first switch connected to said first element in parallel, a second resistance group having a second element with a resistance equal to or larger that the resistance value of said first element and raised as temperature increases, and a second switch connected to said second element in parallel, said second resistance group being connected to said first resistance group in series, and a third resistance group having a third element with a resistance value lowered as temperature increases, and a third switch connected to said third element in parallel, said third resistance group being connected to said first resistance group in series, said reference voltage generating circuit allowing current to flow in the resistance groups to output a reference voltage; and a control circuit rendering any one of said second and third switches conductive.