Device and process for adjustment of an operating parameter of an analog electronic circuit

Adjustment of an operating parameter of an analog electronic circuit is effectuated through a set of adjustment resistances (22) that can be configured from outside the circuit to modulate the value of resistances (R1, R2) in the circuit and thus to adjust the value of the parameter. Fusible elements (20) each associated with one of the said adjustment resistances are selected and activated to configure the resistances of the adjustment device. A combinational logic circuit (18) receives a control signal as input applied from outside the circuit onto a terminal (C) operates to select one of the fusible elements (20) as a function of a signal applied thereto.