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A 500MHz write amplifier for hard disk drives with low output impedance

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3 Author(s)
Le, L. ; Philips Composants et Semiconducteurs, Caen Cedex, France ; Pieraerts, E. ; de Jong, G.

This paper describes a voltage driver write amplifier used for driving current with very short rise- and falltimes into an inductive write head. Implemented in a 1.0µm BiCMOS process, it has demonstrated rise- and fall-times as short as 0.6ns with a 100mA peak-to-peak output write current suitable to write at data-rates in excess of 500Mb/s.

Published in:

Solid-State Circuits Conference, 1999. ESSCIRC '99. Proceedings of the 25th European

Date of Conference:

21-23 Sept. 1999