Magnetic disk ICs
Read / Write amplifier for FDD
The BH6627FS is a 4-mode read / zwrite IC designed for floppy disk drives. This IC has an internal active filter that can
be set to any of multiple settings according to transfer rate, and internal switches for density and inner track / outer track.
Write current can be set to any of multiple settings.
Floppy disk drives (1MB, 1.6MB and 2MB drives)
1) Internal active filter with four settings that can be se-
lected for multiple Q and f0.
2) Time domain filter with internal switch set according
to transfer rate.
3) Any of multiple write current settings can be selected,
and inner track/outer track switching is done internal-
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions