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.

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 emitting 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)

Applications
• Optical disk drive