Integrated circuit

An integrated circuit comprising:

• a Wheatstone bridge having
• a first node on a high potential side thereof,
• a second node,
• a third node on a low potential side thereof, the first node having a higher potential than the third node, and
• a fourth node,
• the Wheatstone bridge including:
• a first resistor connected between the first node and the second node,
• a second resistor connected between the second node and the third node,
• a third resistor connected between the first node and the fourth node, and
• a fourth resistor connected between the fourth node and the third node,
• the Wheatstone bridge being configured to have a predetermined voltage at the first node;
• and
• a bias voltage circuit, including
• a fifth resistor having
• a first end connected to the third node, and
• a second end;
• and
• a first operational amplifier circuit having
• an inverting input terminal to which the second end of the fifth resistor is connected,
• a non-inverting input terminal configured to receive a reference voltage lower than the predetermined voltage, and
• an output terminal connected to the third node.