Patent ID: 7773969

Claim:
A current converter, comprising: a differential signal input; a differential current output; a first differential amplifier, having a first current path comprising a first transistor and a second current path comprising a second transistor, wherein control connections of the first and second transistors form a differential input of the first differential amplifier, and wherein respective first connections of the first and second transistors are coupled to the differential current output, and respective second connections of the first and second transistors are coupled together via a coupling impedance element; a second differential amplifier, having a differential output coupled to the differential input of the first differential amplifier, and a first and second input coupled to the differential signal input, wherein the first input is coupled to the second connection of the second transistor of the first differential amplifier via a first impedance element and the second input is coupled to the second connection of the first transistor of the first differential amplifier via a second impedance element.