MAX3863 Maxim Integrated Products, MAX3863 Datasheet

MAX3863

Manufacturer Part Number

MAX3863

Description

2.7Gbps Laser Driver

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX3863.pdf (15 pages)

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The MAX3863 is designed for direct modulation of laser

diodes at data rates up to 2.7Gbps. An automatic

power-control (APC) loop is incorporated to maintain a

constant average optical power. Modulation compensa-

tion is available to increase the modulation current in

proportion to the bias current. The optical extinction

ratio is then maintained over temperature and lifetime.

The laser driver can modulate laser diodes at ampli-

tudes up to 80mA. Typical (20% to 80%) edge speeds

are 50ps. The MAX3863 can supply a bias current up

to 100mA. External resistors can set the laser output

levels.

The MAX3863 includes adjustable pulse-width control

to minimize laser pulse-width distortion. The device

offers a failure monitor output to indicate when the APC

loop is unable to maintain the average optical power.

The MAX3863 accepts differential CML clock and data

input signals with on-chip 50Ω termination resistors. If a

clock signal is available, an input data-retiming latch

can be used to reject input pattern-dependent jitter.

The laser driver is fabricated with Maxim’s in-house

second-generation SiGe process.

19-2281; Rev 2; 5/03

Covered by U.S. patent number 5,883,910. Other patents

pending.

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

SONET and SDH Transmission Systems

WDM Transmission Systems

3.2Gbps Data Communications

Add/Drop Multiplexers

Digital Cross-Connects

Section Regenerators

Long-Reach Optical Transmitters

________________________________________________________________ Maxim Integrated Products

General Description

2.7Gbps Laser Driver with Modulation

Applications

♦ Single +3.3V Power Supply

♦ 58mA Power-Supply Current

♦ Up to 2.7Gbps (NRZ) Operation

♦ On-Chip Termination Resistors

♦ Automatic Power Control (APC)

♦ Compensation for Constant Extinction Ratio

♦ Programmable Modulation Current Up to 80mA

♦ Programmable Bias Current Up to 100mA

♦ 50ps Typical Rise/Fall Time

♦ Pulse-Width Adjustment Circuit

♦ Selectable Data-Retiming Latch

♦ Failure Detector

♦ Mark-Density Monitor

♦ Current Monitors

♦ ESD Protection

*Dice are designed and guaranteed to operate from -40°C to

+85°C, but are tested only at T

MAX3863EGJ

MAX3863E/D*

PART

TOP VIEW

THE EXPOSED PAD MUST BE SOLDERED TO GND ON THE CIRCUIT BOARD.

DATA+

DATA-

CLK+

CLK-

- 40°C to + 85°C

RANGE

TEMP

Compensation

Ordering Information

MAX3863

Pin Configuration

= +25°C

PIN-

PACKAGE

32 QFN

Dice

Features

G3255-1

CODE

MDMON

MODN

MOD

BIAS

FAIL

PKG

—

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