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TZA3001BHL_C1

SDH/SONET STM4/OC12 laser drivers

Philips Electronics 

Philips Semiconductors

SDH/SONET STM4/OC12 laser drivers

Product specification

TZA3001AHL;

TZA3001BHL;

FEATURES

• 622 Mbits/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.

TZA3001AHL

• Laser alarm output for signalling extremely low and high

bias current conditions.

TZA3001BHL

• Extra STM4 622 Mbits/s loop mode input; both CML and

PECL compatible.

APPLICATIONS

• SDH/SONET STM4/OC12 optical transmission systems

• SDH/SONET STM4/OC12 optical laser modules.

GENERAL DESCRIPTION

The TZA3001AHL, TZA3001BHL and TZA3001U are fully

integrated laser drivers for STM4/OC12 (622 Mbits/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 TZA3001AHL 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 TZA3001BHL is provided with an additional RF data

input to allow remote system testing (loop mode).

The TZA3001U is a bare die version for use in compact

laser module designs. The die contains 40 pads and

features the combined functionality of the TZA3001AHL

and the TZA3001BHL.

TZA3001U

• Bare die version with combined bias alarm and loop

mode functionality.

ORDERING INFORMATION

TYPE

NUMBER

TZA3001AHL

TZA3001BHL

TZA3001U

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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