Switch means for electrically coupling the resistor to the resistance in response to the control signal andĬontrol means, coupled between said electrical interconnection lead means and the switch means, for electrically coupling said electrical interconnection lead means to the switch means when the control signal is applied to said interconnection lead means, and for electrically decoupling said interconnection lead means from the switch means when the input signal is applied to said interconnection lead means.ģ.
The combination of claim 1 wherein the differential amplifier comprises a nominal resistance coupled between the differential amplifier and a supply voltage bus, the nominal offset voltage being a function of the nominal resistance, said offset voltage adjusting means comprising:Ī resistor nominally electrically decoupled from the resistance Wherein the integrated circuit includes means, coupled to the electrical interconnection lead means, for adjusting the offset voltage of the differential amplifier from the nominal offset voltage in response to the control signal, said adjusting means being unresponsive to the input signal.Ģ. A network is coupled between the supply voltage bus and the collector electrode of the first transistor, such network comprising: a first resistor nominally electrically decoupled from between the supply voltage bus and said collector electrode a switch element, responsive to a programming signal applied across the first and second interconnection leads during a programming mode of the integrated circuit, for electrically coupling the first resistor between the supply voltage bus and said collector electrode to change the offset voltage from the nominal offset voltage by a predetermined amount and a control element operable during the programming mode to electrically couple the switch element to the first interconnection lead, and operable during the normal operating mode to electrically decouple the switch element from the first interconnection lead.Ī package comprising electrical interconnection lead means for receiving a control signal during a first mode of operation and for receiving an input signal during a second mode of operation Īn integrated circuit disposed in said package, such integrated circuit comprising a differential amplifier having a nominal offset voltage and The nominal resistance is provided by a plurality of serially-coupled resistors. The differential amplifier has a nominal offset voltage which is a function of a nominal resistance coupled between the collector electrode of a first one of the pair of emitter-coupled transistors and the reference potential.
The integrated circuit comprises a supply voltage bus coupled to a second interconnection lead and fed by a reference potential and a differential amplifier comprising a pair of emitter-coupled transistors. An integrated circuit disposed in a package having a plurality of electrical interconnection leads, a first interconnection lead being adapted to receive an input signal during a normal operating mode of the integrated circuit.