The BH6625FS is a 4-mode read / write IC designed for floppy disk drives, and has an active filter that can be set according to transfer rate. Any of multiple write current settings can be selected, and inner track / outer track switching is done internally.

Features
1) Internal active filter with multiple settings that can be selected for multiple Q and f0.
2) Time domain filter that is internally switchable according to transfer rate.
3) Any of multiple write current settings can be selected, and inner track / outer track switching is done internally.

Applications
    Floppy disk drives (1MB, 1.6MB and 2MB)