AN8725FH データシートの表示（PDF） - Panasonic Corporation

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AN8725FH

Semiconductor laser power control IC

Panasonic Corporation 

ICs for Optical Disk Drive

AN8725FH

Semiconductor laser power control IC

s Overview

The AN8725FH is a laser driver IC that can set a laser

emitting level to a maximum precision in recording and

playback of an optical recording equipment such as PD,

and can modulate a laser light in tune with the external

signal.

s Features

• Digital setting of playback current, peak current, bias

current and abnormal light emitting level

• Peak current and bias current can be modulated by the

external signal.

• Driving current set-up (digital set-up)

For playback: 8-bit + 4-bit (0 mA to 80 mA)

5-bit + 4-bit (0 mA to 150 mA)

For peak: 4-bit + 8-bit (0 mA to 150 mA)

For bias: 4-bit + 8-bit (0 mA to 150 mA)

• Laser output light monitoring circuit built-in

• Abnormal light emitting detecting function built-in:

Possible to set up excessive and insufficient light emit-

ting levels with 4-bit DAC for playback and recording,

respectively.

• Supply voltage abnormality detection:

Voltage down (3.9 V or less), voltage up (6.1 V or more)

s Applications

• Optical disk drive

60

61

14.00±0.20

12.00±0.20

41

40

Unit: mm

80

1

(1.25)

0.50

21

20

0.18

+0.10

–0.05

(1.00)

Seating plane

0.50±0.20

0° to 10°

QFP080-P-1212

1

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