Abstract: An output signal driver includes a positive output node, a negative output node, a power supply input node, a power supply common node, a charging capacitor, a discharging capacitor, a current source, a current sink, a first switch, a second switch, and a controller. The charging capacitor is coupled to the power supply input node. The discharging capacitor is coupled to the negative output node. The current source is coupled between the power supply input node and the positive output node. The current sink is coupled between the positive output node and the power supply common node. The first switch is coupled in parallel with the current source. The second switch is coupled in parallel with the current sink. The controller is coupled to the current source, the current sink, the first switch, and the second switch to apply either complementary constant current pulses or complementary constant voltage pulses to the positive output node.