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

fYear

2005

fDate

21-21 Sept. 2005

Firstpage

519

Lastpage

522

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Custom Integrated Circuits Conference, 2005. Proceedings of the IEEE 2005

Conference_Location

San Jose, CA

Print_ISBN

0-7803-9023-7

Type

conf

DOI

10.1109/CICC.2005.1568720

Filename

1568720