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

AD9662ARQZ屬于集成電路（IC） > 激光驅(qū)動(dòng)器。亞德諾半導(dǎo)體技術(shù)有限公司制造生產(chǎn)的AD9662ARQZ激光驅(qū)動(dòng)器激光驅(qū)動(dòng)器電源管理集成電路 (PMIC) 可用于提供一個(gè)或多個(gè)受控電流源，以從標(biāo)稱恒定電壓電源為半導(dǎo)體激光器件供電。產(chǎn)品通常支持通過監(jiān)控受驅(qū)動(dòng)的激光器件發(fā)出的光功率而得到反饋，可廣泛應(yīng)用于光通信系統(tǒng)中；并因具有對(duì)提供給用電設(shè)備的電流進(jìn)行高頻調(diào)制的能力，而與執(zhí)行類似功能的器件區(qū)分開來。