Sensor circuit for detecting the setting of an integrated circuit

An integrated circuit, comprising:

• a terminal for connecting to an external measurement element, the external measurement element having a characteristic that indicates a setting of the integrated circuit;
• a sensor circuit comprising a voltage source and a measurement sensor, the voltage source configured to supply a voltage to the terminal that is independent of the characteristic of the external measurement element so that current flowing through the external measurement element responsive to the voltage is a function of the characteristic of the external measurement element, the measurement sensor configured to sense the current in the external measurement element and generate a control signal based on the sensed current, the control signal indicating the setting of the integrated circuit;
• and
• a functional module configured to implement the setting indicated by the control signal.