Patent ID: 8416012

Claim:
A reference voltage generating circuit, comprising: a first power supply; a second power supply; a first variable resistance circuit having one end connected to the first power supply and configured to he capable of adjusting a resistance value of the first variable resistance circuit; a series resistance circuit having at least one resistance and one end connected to the first variable resistance circuit; a second variable resistance circuit having one end connected to the series resistance circuit and the other end connected to the second power supply, and configured to he capable of adjusting a resistance value of the second variable resistance circuit; a first terminal arranged between the first variable resistance circuit and the series resistance circuit; a second terminal arranged between the series resistance circuit and the second variable resistance circuit; and a voltage selecting circuit configured to select one of a voltage of the first terminal and a voltage of the second terminal, and output the selected voltage as a reference voltage, wherein each of the first and second variable resistance circuits has a plurality of parallel circuits connected in series, each of the plurality of parallel circuits including a resistance and a fuse which are connected in parallel.