GENERAL DESCRIPTION

The 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 gain by the channel’s input current. The input current for each of the input channels—INR, IN2, and IN3—can be set either by using an external resistor that converts an input voltage to a current or by directly using a current source.

FEATURES

Current-controlled current source

with 3 input channels

Output current for Channel 3—315 mA

Output current for other channels—210 mA

Rise time/fall time of 0.8 ns

On-chip oscillator

Single 5 V power supply (±10)

Low output overshoot

Low power consumption

APPLICATIONS

CD-RW drives

DVD-RW, DVD+RW, MO drives

Laser diode current switching

AD9662属于集成电路（IC） > 激光驱动器。亚德诺半导体技术有限公司制造生产的AD9662激光驱动器激光驱动器电源管理集成电路 (PMIC) 可用于提供一个或多个受控电流源，以从标称恒定电压电源为半导体激光器件供电。产品通常支持通过监控受驱动的激光器件发出的光功率而得到反馈，可广泛应用于光通信系统中；并因具有对提供给用电设备的电流进行高频调制的能力，而与执行类似功能的器件区分开来。