Sensor circuit having a compensating resistor for compensating a temperature coefficient of a bridge circuit

A sensor circuit, comprising:

• a constant-current source;
• a ground connection;
• a bridge circuit, that is connected between the constant-current source and the ground connection, comprising at least one half bridge having a first xMR resistor and a second xMR resistor, which have a negative temperature coefficient in each case;
• and
• at least one compensating resistor with positive temperature coefficient, which is connected between the constant-current source and the ground connection and parallel to the bridge circuit.

A sensor circuit, comprising:

• a constant-voltage source;
• a ground connection;
• a bridge circuit comprising at least one half bridge having a first xMR resistor and a second xMR resistor which in each case have a negative temperature coefficient;
• and
• at least one compensating resistor with a negative temperature coefficient, wherein the negative temperature coefficient of the at least one compensating resistor is smaller than the negative temperature coefficient of the first xMR resistor or the second xMR resistor,
• wherein the at least one compensating resistor is connected between the constant-voltage source and the bridge circuit and the bridge circuit is connected between the at least one compensating resistor and the ground connection, or
• wherein the at least one compensating resistor is connected between the bridge circuit and the ground connection and the bridge circuit is connected between the constant-voltage source and the at least one compensating resistor.