Patent ID: 7663409

Claim:
A voltage/current converter circuit comprising: a bridge configuration comprising: a first current path comprising a first resistor, a first transistor, and an input node to receive a ramp voltage to be converted; a second current path to pass a converted current, the second current path comprising a second resistor and a second transistor; and an amplifier arrangement to balance the bridge configuration by providing an output signal to a control terminal of the first transistor and by providing the output signal to a control terminal of the second transistor, the control terminal of the first transistor being connected to the control terminal of the second transistor, the amplifier arrangement comprising: a first input terminal electrically connected to the first current path; and a second input terminal electrically connected to the second current path; and a third resistor in the first current path between the first resistor and the first transistor, the third resistor being in a circuit path between the first input terminal and the input node, wherein the first resistor, the third resistor, and the first transistor are in series; and wherein: the first transistor electrically connects the input node to a first power supply terminal; the first input terminal is electrically connected to a second power supply terminal via the first resistor; the second input terminal is electrically connected to the second power supply terminal via the second resistor; and the second input terminal is electrically connected to the first power supply terminal via the second transistor.