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M02061-12/-21

1

3.3 or 5 Volt Laser Driver

Rev V6

Applications

• SFP and SFF Modules

• 1G/2G/4G Fibre Channel modules

• Short reach and Metro SONET/SDH

• CPRI: 614.4, 1228.8, 2457.6, 3072.0, 4915.2 and 6144.0 Mbit/s

• OLT Laser Driver for GPON and EPON

The M02061 is a highly integrated, programmable laser driver intended for SFP/SFF modules. Using differential

PECL data inputs, the M02061 supplies the bias and modulation current required to drive an edge-emitting laser.

The modulation output can be DC coupled to the laser diode.

The M02061 includes automatic power control to maintain a constant average laser output power over temperature

and life. In addition, the modulation current can be temperature compensated to minimize variation in extinction

ratio over temperature.

Features

• High-speed operation; suitable for SFP/SFF applications.

Typical rise/fall times of 55 ps.

• Programmable temperature compensation. Modulation output and

bias output can be controlled using a few discrete resistors.

• Supports DDMI (SFF-8472) diagnostics

• DC or AC coupled modulation drive. Up to 100 mA modulation

current available when AC coupled.

• Low overshoot allows high extinction ratio with low jitter

• Automatic laser power control, with “Slow-Start”

• PECL and CML compatible differential data inputs

• Complies with major MSAs (GBIC, SFF, SFF-8472, SFP) including

timing requirements

• Packaged in a QFN24

• 3.3 V or 5 V operation

• Pulse width adjustment

Typical Applications Diagram

Input

Buffer

Internal

3.3V reg.

Input

Buffer

D - FF

Output

Buffer

Laser

Driver

Automatic Power Control

(laser bias current)

Safety

Circuitry with

Latched Fault

Modulation

Control

OUT-

OUT+

IPIN

Internal Power Bus

(M02061-12

only)

(M02061-21

only)

TX

Disable