M63029FP Renesas Technology, M63029FP Datasheet - Page 15

• Manufacturer Part Number: M63029FP
• Description: (M63028 / M63029) Spindle Motor and 5ch Actuator Driver
• Manufacturer: Renesas Technology

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M63028/029FP
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 following
Figure.
The voltage gain [Gvo] is 12.0[V/V].
Rev.1.0, Sep.16.2003, page 15 of 21
5VCC
2
FOIN
REF
R
R
5VCC
Coil
FO+
-
+
FO-
-
+
Vo
R
R
R
R
= 12 ( FOIN – REF)
Vo = [FO+] – [FO-]
- -
+
-
+
Ra
Ra
Ra
Ra
Output
Voltage [V]
Ra=6R
Gvo = 12 [V/V]
FOIN - REF (V)
FO+
FO-
Coil
FO+
FO-
-
+
Coil