1

®

FN8211.0

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

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X9530

Temperature Compensated Laser Diode

Controller

FEATURES

• Compatible with Popular Fiber Optic Module

Specifications such as Xenpak, SFF, SFP, and

GBIC

• Package

—14 Pin TSSOP

—15 Lead 2.7 x 3.5mm CSP (Chip-Scale

Package)

• Two Programmable Current Generators

—±1.6 mA max.

—8-bit (256 Step) Resolution

• Integrated 6 bit A/D Converter

• Temperature Compensation

—Internal or External Sensor

—-40°C to +100°C Range

—2.2°C/step resolution

—EEPROM Look-up Tables

• Hot Pluggable

• 2176-bit EEPROM

—17 Pages

—16 Bytes per Page

• Write Protection Circuitry

—Intersil BlockLock™

—Logic Controlled Protection

—2-wire Bus with 3 Slave Address Bits

• 3V to 5.5V, Single Supply Operation

LASER DIODE BIAS CONTROL APPLICATIONS

• SONET and SDH Transmission Systems

• 1G and 10G Ethernet, and Fibre Channel Laser

Diode Driver Circuits

DESCRIPTION

The X9530 is a highly integrated laser diode bias

controller which incorporates two digitally controlled

Programmable

Current

Generators,

temperature

compensation with dedicated look-up tables, and

supplementary EEPROM array. All functions of the

device are controlled via a 2-wire digital serial

interface.

Two

temperature

compensated

Programmable

Current Generators, vary the output current with

temperature

according

to

the

contents

of

the

associated nonvolatile look-up table. The look-up table

may be programmed with arbitrary data by the user,

via the 2-wire serial port, and either an internal or

external temperature sensor may be used to control

the output current response. These temperature

compensated pro-grammable currents maybe used to

control the modulation current and the bias current of

a laser diode.

The integrated General Purpose EEPROM is included

for product data storage and can be used for

transceiver module information storage in laser diode

applications.

TYPICAL APPLICATION

Laser

Diode

Driver

X9530

High Speed

Data Input

MPD

LD

GBIC / SFP / XFP Module

Circuit

SDA

SCK

Data Sheet

March 10, 2005