Title :
A 1.2Gb/s write driver with pre-emphasis overshoot control optimized for high density HDD applications
Author :
Hayashi, Y. ; Sonehara, M. ; Ueno, S. ; Ito, Y. ; Koyama, A. ; Yamashita, H.
Author_Institution :
Micro Device Div., Hitachi Ltd., Tokyo
Abstract :
This paper presents circuit techniques of a write driver with pre-emphasis control used as part of preamplifiers for hard disk drives (HDD). Fabricated in 0.35 mum SOI-BiCMOS process, it has demonstrated 1.2Gb/s data rate with write current amplitude over 180 mApp. Wide controllability of overshoot current is achieved in both amplitude and duration independently, suitable for not only longitudinal but perpendicular recording for high density HDD
Keywords :
BiCMOS integrated circuits; disc drives; driver circuits; hard discs; perpendicular magnetic recording; preamplifiers; silicon-on-insulator; 0.35 micron; 1.2 Gbit/s; SOI-BiCMOS process; circuit techniques; hard disk drives; high density HDD; overshoot current; perpendicular recording; pre-emphasis overshoot control; preamplifier circuits; write current amplitude; write driver; Centralized control; Controllability; Driver circuits; Impedance; Magnetic heads; Perpendicular magnetic recording; Preamplifiers; Reflection; Steady-state; Voltage;
Conference_Titel :
Custom Integrated Circuits Conference, 2005. Proceedings of the IEEE 2005
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-9023-7
DOI :
10.1109/CICC.2005.1568720
