AD9662 is a laser diode driver for high performance CD and DVD recordable drives. It includes three channels for three different optical power levels: the read channel generates a continuous output power level, whereas Channel 2 and Channel 3 are used as write channels having 0.8 ns rise/fall times. All channel currents are summed at the IOUT pin. Each channel’s output current is established by multiplying the channel’s input current and a current gain, where the current gain is controlled by the input current. The device is suitable for CD-RW, DVD-RW, DVD+RW and MO drives.