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TZA3041

Gigabit Ethernet/Fibre Channel laser drivers

Philips Electronics 

Philips Semiconductors

Gigabit Ethernet/Fibre Channel laser

drivers

Product specification

TZA3041AHL; TZA3041BHL;

TZA3041U

FEATURES

• 1.2 Gbits/s data input, both Current Mode Logic (CML)

and Positive Emitter Coupled Logic (PECL) compatible;

maximum 800 mV (p-p)

• Adaptive laser output control with dual loop, stabilizing

optical 1 and 0 levels

• Optional external control of laser modulation and biasing

currents (non-adaptive)

• Automatic laser shutdown

• Few external components required

• Rise and fall times of 120 ps (typical value)

• Jitter <50 mUI (p-p)

• RF output current sinking capability of 60 mA

• Bias current sinking capability of 90 mA

• Power dissipation of 430 mW (typical value)

• Low cost LQFP32 5 × 5 plastic package

• Single 5 V power supply.

TZA3041AHL

• Laser alarm output for signalling extremely low and high

bias current conditions.

TZA3041BHL

• Extra 1.2 Gbits/s loop mode input; both CML and PECL

compatible.

APPLICATIONS

• Gigabit Ethernet/Fibre Channel optical transmission

systems

• Gigabit Ethernet/Fibre Channel optical laser modules.

GENERAL DESCRIPTION

The TZA3041AHL, TZA3041BHL and TZA3041U are fully

integrated laser drivers for Gigabit Ethernet/Fibre Channel

(1.2 Gbits/s) systems, incorporating the RF path between

the data multiplexer and the laser diode. Since the dual

loop bias and modulation control circuits are integrated on

the IC, the external component count is low. Only

decoupling capacitors and adjustment resistors are

required.

The TZA3041AHL features an alarm function for signalling

extreme bias current conditions. The alarm low and high

threshold levels can be adjusted to suit the application

using only a resistor or a current Digital-to-Analog

Converter (DAC).

The TZA3041BHL is provided with an additional RF data

input to allow remote system testing (loop mode).

The TZA3041U is a bare die version for use in compact

laser module designs. The die contains 40 pads and

features the combined functionality of the TZA3041AHL

and the TZA3041BHL.

TZA3041U

• Bare die version with combined bias alarm and loop

mode functionality.

ORDERING INFORMATION

TYPE

NUMBER

TZA3041AHL

TZA3041BHL

TZA3041U

NAME

LQFP32

−

PACKAGE

DESCRIPTION

plastic low profile quad flat package; 32 leads; body 5 × 5 × 1.4 mm

bare die; 2000 × 2000 × 380 µm

VERSION

SOT401-1

−

2002 Aug 13

2

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