Integrated circuit and semiconductor device

An integrated circuit coupled to a bridge circuit having a pair of input terminals and a pair of output terminals, the integrated circuit comprising:

• an amplifier circuit configured to
• output a first voltage, in a first case in which the pair of input terminals of the bridge circuit have a first input voltage applied thereto, the first voltage being based on a reference voltage and a first amplified voltage that is obtained by amplifying, by a predetermined gain, a first output voltage outputted from the pair of output terminals of the bridge circuit, and
• output a second voltage, in a second case in which the pair of input terminals of the bridge circuit have a second input voltage of a polarity opposite to that of the first input voltage applied thereto, the second voltage being based on the reference voltage and a second amplified voltage that is obtained by amplifying, by the predetermined gain, a second output voltage outputted from the pair of output terminals of the bridge circuit;
• and
• a reference voltage output circuit configured to
• set a level of the reference voltage to a first level, in the first case, and
• set the level of the reference voltage to a second level, in the second case, wherein
• the first level is a level corresponding to a sum of a predetermined voltage and a third amplified voltage that is obtained by amplifying, by the predetermined gain, an offset voltage generated at the pair of output terminals of the bridge circuit, and
• the second level is a level corresponding to a difference between the predetermined voltage and the third amplified voltage.