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SY88992LMG

3.3V, 4.25Gbps VCSEL Driver

Micrel 

SY88992L

3.3V, 4.25Gbps VCSEL Driver

General Description

Features

The SY88992L is a single supply 3.3V, low power

consumption, small-form factor VCSEL driver ideal for

use in datacom applications; Ethernet, GbE (Gigabit

Ethernet), and FC (Fibre Channel) applications that

operate from 100Mbps up to 4.25Gbps. The

modulation current is set by applying an external

voltage at the IM_SET pin. The driver features an

adjustable peaking option with variable amplitude and

duration to improve VCSEL edge response. The driver

can deliver modulation current up to 25mA and a

peaking current up to 35% of the modulation current.

This device is intended to be used with Micrel’s

MIC3001 Optical Transceiver Management IC, which

allows for both modulation and bias current control and

monitoring, APC (Automatic Power Control), and

temperature compensation.

All support documentation can be found on Micrel’s

web site at: www.micrel.com.

• Up to 25mA modulation current

• Operates from 100Mbps to 4.25Gbps

• Peaking with variable duration option for better

VCSEL response

• Dual peaking, on the rise and falling edges

• Peaking current proportional to modulation current

• Easy modulation current setting

• Fully controllable with Micrel MIC3001

• Small (3mm x 3mm) 16 pin QFN package

Applications

• Multirate LAN, SAN applications up to 4.25Gbps:

Ethernet, GbE, FC

• SFF, SFP Modules

Markets

• Datacom

________________________________________________________________

Typical Application

January 2006

M9999-011306-A

hbwhelp@micrel.com or (408) 955-1690

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