描述 Description

The MAX3869 is a complete, single +3.3V laser driverfor SDH/SONET applications up to 2.5Gbps. Thedevice accepts differential PECL data and clock inputsand provides bias and modulation currents for driving alaser. A synchronizing input latch can be used (if aclock signal is available) to reduce jitter.
An automatic power control (APC) feedback loop isincorporated to maintain a constant average opticalpower over temperature and lifetime. The wide modulationcurrent range of 5mA to 60mA and bias current of1mA to 100mA are easy to program, making this productideal for use in various SDH/SONET applications.
The MAX3869 also provides enable control, two currentmonitors that are directly proportional to the laser bias andmodulation currents, and a failure-monitor output to indicatewhen the APC loop is unable to maintain the averageoptical power. The MAX3869 is available in 32-pin TQFPand small 32-pin QFN packages as well as dice.

特性 Features

? Single +3.3V or +5V Power Supply
? 64mA Supply Current at +3.3V
? Programmable Bias Current from 1mA to 100mA
? Programmable Modulation Current from 5mA to 60mA
? Bias Current and Modulation Current Monitors
? 87ps Rise/Fall Time
? Automatic Average Power Control with Failure Monitor
? Complies with ANSI, ITU, and Bellcore SDH/SONET Specifications
? Enable Control

應用 Application

? 2.5Gbps光發(fā)送器
? 上/下路復用器
? 數(shù)字交叉連接
? 段再生器
? SONET/SDH傳輸系統(tǒng)

簡介

MAX3869屬于集成電路（IC）的激光驅動器。由制造生產的MAX3869激光驅動器激光驅動器電源管理集成電路 (PMIC) 可用于提供一個或多個受控電流源，以從標稱恒定電壓電源為半導體激光器件供電。產品通常支持通過監(jiān)控受驅動的激光器件發(fā)出的光功率而得到反饋，可廣泛應用于光通信系統(tǒng)中；并因具有對提供給用電設備的電流進行高頻調制的能力，而與執(zhí)行類似功能的器件區(qū)分開來。