Description
   The ATR0808 is a laser diode driver for the operation of two different grounded laser diodes for DVD-RW/DVD+RW (650 nm) and CD-RW (780 nm). It includes three channels for three different optical power levels which are controlled by a separate IC. The read channel generates a continuous output level, whereas the channels 2 and 3 are provided as write channels with very fast switching speeds. 

FEATUREs
• Current-controlled Output Current Source with 3 Input Channels
• Two Selectable Outputs for Grounded Laser Diodes
• Output Current per Write Channel: 350 mA
• Total Output Current: 500 mA
• 200 Ω Channel Input Resistance
• On-chip RF Oscillator
• Control of Two Different Swings by Use of Two External Resistors
• Oscillator Frequency Range from 200 MHz to 500 MHz
• Oscillator Swing: 100 mA
• Single 5 V Power Supply
• Common Enable/Disable Input
• TTL/CMOS Control Signals
• Small Pb-free QFN16 (4 mm × 4 mm) or SSO16 Package

APPLICATIONs
• DVD-ROM with CD-RW Capability
• DVD+RW with CD-RW Capability
• DVD-RW with CD-RW Capability
• Writable Optical Drives