Application Circuit

Quiescent dissipation current

-

3.40

-30

4.4

-50

-

9.3

17.0

3.70

-

5.0

-

5.4

11.3

25.0

4.00

30

5.6

50

-

13.3

mA

V

mV

V

Vf=5V, Vr=0V

VIN4=Vb

Vb=4V

mV

V

dB

VREF

GVC

Internal Vref pin voltage

Output offset voltage

Maximum output amplitude

Output offset voltage

Maximum output amplitude

Voltage gain

-5

2.0

7.0

0

9.0

13.0

5

-

-

mV

mA

mA

Isink

Offset voltage

Output driving current sink

Output driving current source

Spindle driver (CH4)

<Driver except spindle driver (CH1,2,3)>

No load

Symbol

Min.

Max.

Unit

Conditions

Typ.

Parameter

<OP amp.>

LEVEL

SHIFT

D

D

D

F

R

R

F

R

F

R

F

R

F

F

INTER

FACE

INTER

FACE

SPINDLE

MOTOR

TRACKING

COIL

FOCUS

COIL

SLED

MOTOR

0.1µF

0.47µF

0.1µF

0.1µF

82kΩ

3000pF

19k

6.5k

50k 50k

50k

100k

50k

PIN3

10k

Pre

Vcc

50k

Vref

Vref

POW

POW

50k 50k

POW

PIN26

10k

15

16

17

18

19

20

21

22

23

24

25

26

27

28

1

2

3

4

5

6

7

8

9

10

11

12

13

14

D

D

D

D

D

(ch1, 2)

POW

(ch3, 4)

15kΩ

SW

H=ON

L=OFF

DIGITAL SERVO

MUTE

REVERSE

SLED OUT

FORWARD

SPINDLE

OUT

BIAS

1.75V

FORWARD

TRACKING

ERROR

OUT

REVERSE FORWARD

FOCUS

ERROR

OUT

REVERSE

INTER

FACE

BA5947FP