1. A voltage controlled oscillator (VCO) providing improved gain response over semiconductor process variations, comprising: an input port for receiving a control voltage (V C ); and a voltage-to-current (V/I) converter responsive to the control voltage and providing a control current, the V/I converter including: a plurality of differential transistor pairs; and each of the plurality of differential transistor pairs each having one input coupled to the control voltage, and each of the plurality of differential transistor pairs each having a second input, with the second input of each of the plurality of differential transistor pairs being coupled to successively increasing voltage levels.