AN8725FH - Panasonic Semiconductor

AN8725FH Semiconductor laser power controller

Note) Description on notations of "Category" in the following list: IN : Input pin I/O : Input/output pin (pull-down with 100 k Ω) IND : Input pin (pull-down with 100 kΩ) PS : Power supply/GND pin INU : Input pin (pull-up with 100 kΩ) MSC : Parts connecting pin, etc. OUT: Output pin A: Analog function D: Digital function AN8725FH Pin No. 1 Symbol SGND C.

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..