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M02094-12

1

3.3 or 5 Volt VCSEL/FP Laser Driver IC for Applications to 2 Gbps

Rev V5

Applications

• EPON FTTH modules

• Gigabit Ethernet modules

• 1G/2G Fibre Channel modules

• Digital Video

The M02094 is a highly integrated, programmable VCSEL driver intended for SFP/SFF modules to 2.0 Gbps. Using

differential PECL data inputs, the M02094 supplies the bias and modulation current required to drive a VCSEL or

edge-emitting laser. The modulation output can be AC or DC-coupled to a FP laser diode or AC coupled to a com-

mon anode or common cathode VCSEL.

Peaking adjustment is available to improve VCSEL fall time.

EPON burst mode operation is supported with no extra components.

Integrated safety circuitry detects faults and provides latched bias and modulation current shutdown.

Functional Block Diagram

V

Internal

3.3V reg.

Input

Buffer

Output

Buffer

Laser

Driver

Automatic Power Control

(laser bias current)

TX

Disable

Safety

Circuitry with

Latched Fault

Modulation

Control

SV

CC

and

IB

OUT_CC

OUT-

OUT+

GND

0

IB

OUT_CA

and

SGND

IPIN

D

D

Internal Power Bus

CC

SEL

Features

• High speed operation; suitable for SFP/SFF applications from

155Mbps to 2.0 Gbps. Typical rise/fall times < 110 ps.

• Supports Common Anode VCSEL, Common Cathode VCSEL, or FP

LASER. May be used with or without a monitor photodiode.

• 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.

• Peaking circuit to optimize VCSEL response.

• Low overshoot allows high extinction ratio with low jitter.

• Supports E-PON burst mode with no extra components

• Automatic Laser Power Control, with “Slow-Start”.

• 3.3V or 5V operation