Abstract: The disclosure concerns integrated circuits. More particularly, a method is disclosed for making a constant current source, in these circuits, that is stable as a function of the temperature and the supply voltage of the integrated circuit. It is proposed to make a stable current source in using two parallel-mounted transistors, one of which is controlled by a bandgap type of reference voltage while the other is controlled by a Wilson mirror. The addition of the currents of the two transistors gives a current that is far more stable as a function of temperature than the individual currents in each of the transistors.