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 (R 1 , R 2 ) 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.