BH6627FS データシートの表示（PDF） - ROHM Semiconductor
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BH6627FS Datasheet PDF : 14 Pages
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Magnetic disk ICs
FRead characteristics
BH6627FS
Total filter peak frequency setting
f0 = a / (RRCC [kΩ] +0.09) [kHz]
FILC “H” “L”
a = 313 313 250 [kbps] outer track
330 330 250 [kbps] inner track
376 376 300 [kbps] outer track
387 387 300 [kbps] inner track
675 627 500 [kbps] outer track (when F2 = H)
844 765 500 [kbps] inner track (when F2 = H)
765 706 500 [kbps] outer track (when F2 = L)
748 754 500 [kbps] inner track (when F2 = L)
TDF time constant setting
250 [kbps] : T = 758
500 [kbps] : T = 683
500 [kbps] : T = 333
RRCC [kΩ] +604 [ns]
RRCC [kΩ] +434 [ns]
RRCC [kΩ] +388 [ns]
FWrite current switching ratio
Write current setting
Iwr =
24.0
RWCC [kΩ]
[mA]
544
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