BD7902CFS

Optical disc ICs

6/17

!

!

!

!

Electrical characteristics

(unless otherwise noted, Ta=25

Circuit current

Quiescent current 1

Quiescent current 2

Quiescent current 3

Stanby-on current 1

Stanby-on current 2

Sled driver block

Input dead zone (one side)

Input output gain

Output ON resistor (upper)

Output ON resistor (lower)

Output limit current

PWM frequency

Spindle driver block

〈 Hall bias 〉

Hall bias voltage

Spindle driver block

〈 Hall amplifier 〉

Input bias current

Minimum input level

Common mode input Range

Spindle driver block

〈 Torque control 〉

Input dead zone (one side)

Input output gain

Output ON resistor (upper)

Output ON resistor (lower)

Output limit current

PWM frequency

Spindle driver block

〈 FG output 〉

High voltage

Low voltage

Actuator driver block

Output offset voltage

Output saturation voltage "H"

Output saturation voltage "L"

Voltage gain

IQ1

IQ2

IQ3

IST1

IST2

VDZSL

gmSL

RONUSL

RONLSL

ILIMSL

fosc

VHB

IHIB

VHIM

VHICM

VDZSP

gmSP

RONUSP

RONLSP

ILIMSP

fosc

VFGH

VFGL

VOFFT

VOHFT

VOLFT

GVFT

−

−

−

−

−

15

0.8

(0.4)

−

−

0.8

(0.4)

−

0.7

−

50

1

20

2.4

(0.8)

−

−

1.2

(0.4)

−

−

−

−50

−

−

16.0

12

9

2.7

0.09

0

40

1.0

(0.5)

1.8

0.85

0.94

(0.47)

100

1.15

1

−

−

50

3.0

(1.0)

0.6

0.35

1.42

(0.47)

100

4.9

0.1

0

0.45

0.45

17.5

20

16

4.9

0.2

0.1

65

1.2

(0.6)

2.3

1.5

1.08

(0.54)

−

1.6

5

−

4

90

3.6

(1.2)

1.0

0.7

1.64

(0.54)

−

−

−

50

0.8

0.8

19.0

mA

mA

mA

mA

mA

mV

A/V

(V/V)

Ω

Ω

A

(V)

kHz

V

µA

V

mV

A/V

(V/V)

Ω

Ω

A

(V)

kHz

V

V

mV

V

V

dB

Parameter

Symbol

Min.

Typ.

Max.

Unit

Conditions

Circuit

SLRNF

=0.5Ω

IL

=500mA

IL

=−500mA

SLRNF

=0.5Ω

IHB

=10mA

SPRNF

=0.33Ω

IL

=500mA

IL

=−500mA

SPRNF

=0.33Ω

100k

IL

=500mA

IL

=−500mA

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

Fig1, 2

This product is not designed for protection against redioactive rays.