AD9665 is a 4-channel, LVDS, dual-output, laser diode driver with oscillator.
The AD9665 is a 4-channel, LVDS, dual-output laser diode driver designed for high-performance CD-RW and DVD recordable drives. It features four input channels, with the read channel generating a continuous output power level and three write channels controllable via TTL or LVDS interfaces. The device includes stable on-chip oscillators with independent frequency and amplitude control to reduce laser-mode hopping.
| Output Channels | 4 input channels |
|---|---|
| Read Channel Current | 170 mA minimum |
| Write Channel 1 Current | 510 mA minimum |
| Write Channel 2 Current | 330 mA minimum |
| Write Channel 3 Current | 165 mA minimum |
| Total Output Current | 950 mA typical |
| Rise/Fall Time | 0.8 ns typical |
| Power Supply | Single 5 V |
| Oscillator Frequency Range | 200 MHz to 500 MHz |
It is used in DVD-R, DVD+R, DVD-RW, DVD+RW, DVD-RAM supercombo drives, Magneto-optical (MO) drives, and for laser diode current switching.
The level of the output current is set by an external resistor which converts voltage into a current at the WxSET pin.