Micrel SY88236L突发模式激光器驱动方案

Micrel 公司的SY88236L是单电源3.3V突发模式激光器驱动器和后放大器,用于数据速率高达2.5Gbps的A-PON, B-PON, EPON, GE-PON和 G-PON应用. 激光器的兼容电压最低为2.4V,调制电流高达85mA, 偏压电流高达85mA,具有偏压, 调制和功率监测功能.本文介绍SY88236L主要特性, 功能方框图和典型应用电路.

The SY88236L is a single supply 3.3V integrated burst mode laser driver and post amplifier for A-PON, B-PON, EPON, GE-PON, and G-PON applications with data rates from 155Mbps up to 2.5Gbps. The driver can deliver modulation current up to 85mA, and provides a high compliance voltage that makes it suitable for high-current operation with the laser DC-coupled to it. The post amplifier can detect signals with amplitude as low as 5mVPP.

The SY88236AL is a version of the SY88236L without 50Ω termination resistors at the inputs of the driver and the post amplifier. The SY88236AL is to be used specially in SFF modules mounted on ONU mother boards which have preinstalled terminations.Removing post amplifier input terminations will allow for receiver gain control.

SY88236L主要特性:

2.4V minimum laser compliance voltage

Operation up to 2.5Gbps

Fast burst mode enable/disable delay

Modulation current up to 85mA

Bias current up to 70mA
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