M63023 데이터 시트보기 (PDF) - Mitsumi

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M63023

SPINDLE MOTOR AND 5CH ACTUATOR driveR

Mitsumi 

MITSUBISHI SEMICONDUCTORS

M63023/024/026/027FP

SPINDLE MOTOR AND 5CH ACTUATOR driveR

FOCUS / TRACKING channel

The f ocus and tracking channel is the Voltage control driv e using BTL .

The f ocus and tracking is the same composition.

The relationship between the dif f erential Voltage between FOIN and REF and the output Voltage

is shown in below Figure.

The Voltage gain [GVo] is 5.0 [V/V].(M63023/024FP)

The Voltage gain [GVo] is 12.0 [V/V].(M63026/027FP)

FOIN

REF

5VCC

R

R

FO-

5VCC

2

Coil

FO+

R

Ra

R

Ra

R

Ra

M63023/024FP Ra=2.5R

M63026/027FP Ra=6R

FO-

Coil

R

Vo

FO+

Ra

GVo = 5 [V/V](M63023/024FP)

GVo = 12 [V/V](M63026/027FP)

Output

FO+

Voltage [V]

FOIN- REF (V)

+

Coil

-

Vo=[FO+]-[FO-]

=5 or 12 X (FOIN-REF)

( 11 / 17)

FO-

REV010307

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