General Description

The MAX3934 is a compact +5V or -5.2V laser driver

designed to directly modulate a laser diode at data

rates up to 10.7Gbps. The driver provides externally

programmable laser biasing and modulation currents.

DC-coupling with an integrated compensation network,

consisting of a series-damping resistor and a shunt RC,

makes the MAX3934 ideal for compact subassemblies.

The MAX3934 accepts a differential CML or PECL data

signal and includes 50

Ω on-chip termination resistors. It

delivers a 1mA to 60mA laser bias current and a 20mA

to 80mA laser modulation current with a typical edge

speed of 25ps (20% to 80%). A high-bandwidth, fully

differential signal path is internally implemented to mini-

mize jitter accumulation. Additional features include a

data polarity control, bias current, and modulation cur-

rent monitors.

Applications

Features

o 1.30mm × 1.35mm Die Size

o Integrated Compensation Network

o Single +5V or -5.2V Power Supply

o 73mA Supply Current

o Up to 10.7Gbps (NRZ) Operation

o Programmable Laser Bias Current Up to 60mA

o Programmable Modulation Current Up to 80mA

o Polarity Control

o 25ps Output Edge Speed

o CML-/PECL-Compatible Signal Inputs

o Integrated Input Termination Resistors

10.7Gbps Compact Laser Diode Driver

________________________________________________________________ Maxim Integrated Products

1

Ordering Information

Typical Application Circuit

19-2605; Rev 0; 10/02

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.

*Dice are designed to operate over a -40°C to +120°C junction

**See Figure 3.

IN+

OUT2-

BIAS

OUT2+

OUT1+

OUT1-

BIASMON

MODMON

10Gbps

SERIALIZER

BIASSET

MODSET

IN-

PLRT

REPRESENTS A CONTROLLED

IMPEDANCE TRANSMISSION LINE

SDO+

SDO-

MAX3934

50

Ω

50

Ω

MAX3952

PART

TEMP RANGE

PIN-

PACKAGE

MAX3934AE/D

-40

°C to +85°C Dice*

12

Ω/580fF

MAX3934BE/D

-40

°C to +85°C Dice*

15

Ω/464fF

Compact Optical

Transmitters

Add/Drop Multiplexer

XFP Modules

XENPAK/XPAK Modules