TZA3031 Просмотр технического описания (PDF) - Philips Electronics

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TZA3031

SDH/SONET STM1/OC3 laser drivers

Philips Electronics 

Philips Semiconductors

SDH/SONET STM1/OC3 laser drivers

Product specification

TZA3031AHL; TZA3031BHL;

TZA3031U

FEATURES

• 155 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.

TZA3031AHL

• Laser alarm output for signalling extremely low and high

bias current conditions.

TZA3031BHL

• Extra STM1 155 Mbits/s loop mode input; both CML and

PECL compatible.

APPLICATIONS

• SDH/SONET STM1/OC3 optical transmission systems

• SDH/SONET STM1/OC3 optical laser modules.

GENERAL DESCRIPTION

The TZA3031AHL, TZA3031BHL and TZA3031U are fully

integrated laser drivers for STM1/OC3 (155 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 TZA3031AHL 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 TZA3031BHL is provided with an additional RF data

input to allow remote system testing (loop mode).

The TZA3031U is a bare die version for use in compact

laser module designs. The die contains 40 pads and

features the combined functionality of the TZA3031AHL

and the TZA3031BHL.

TZA3031U

• Bare die version with combined bias alarm and loop

mode functionality.

ORDERING INFORMATION

TYPE

NUMBER

TZA3031AHL

TZA3031BHL

TZA3031U

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

−

2000 Feb 22

2

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