Patent ID: 6963239

Claim:
A device for the adjustment of an operating parameter of an analog electronic circuit which includes circuit resistances, comprising: a plurality of adjustment resistances that are configured to modulate the value of the circuit resistances and thus to adjust the value of the said parameter; fusible means each connected with one of the adjustment resistances and that are selected and activated to configure the adjustment resistances so as to modulate the value of the circuit resistances; and a logic circuit that receives a control signal as input applied from outside the analog electronic circuit at a terminal thereof and adapted to select one of the fusible means for activation; and wherein the logic circuit comprises: a count circuit connected to a combinational logic circuit the count circuit functioning responsive to the control signal to increment a count forming an addressing signal that is decoded by the combinational logic circuit to identify one of the fusible means; and a control circuit for controlling activation and de-activation of the analog electronic circuit and the adjustment device connected between the terminal of the analog electronic circuit and the count circuit, the control circuit including a first stage to control activation and de-activation of the analog electronic circuit and a second stage to generate a clock signal controlling the count circuit.