Embodiments of the present invention relate to an impedance-matched write
driver circuit which comprises a voltage source, a write driver circuit
electrically coupled to the voltage source, a signal input coupled so as
to effect the output of the write driver circuit, and an impedance
matching circuit electrically coupled to the write driver circuit,
wherein the impedance matching circuit is enabled to damp the output
oscillations in the output of the write driver circuit. Importantly, the
impedance of the impedance-matched write driver circuit is selectable by
component selection or by logic. Another embodiment of the present
invention is directed to a system, e.g., a magnetic disk storage unit
that makes use of the write driver as described herein.