M63020FP データシートの表示（PDF） - MITSUBISHI ELECTRIC
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M63020FP Datasheet PDF : 17 Pages
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MITSUBISHI SEMICONDUCTORS
M63020FP
SPINDLE MOTOR AND 5CH ACTUATOR DRIVER
FOCUS / TRACKING channel
The focus and tracking channel is the voltage control drive using BTL .
The focus and tracking is the same composition.
The relationship between the differential voltage between FOIN and REF and the output voltage
is shown in below Figure.
The voltage gain [Gvo] is 5.0 [V/V].
FOIN
R
REF
R
VM3
R
R
2.5R
FO-
R
2.5R
Coil
R
FO+
FO-
VM3
2
Coil
FO+
Output
FO+
voltage [V]
+
Coil
-
Vo
FOIN – REF (V)
Gvo = 5 [v/v]
Vo=[FO+] – [FO-]
=5 x (FOIN – REF)
(11 / 17)
FO-
REV990726
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