TZA3047B Просмотр технического описания (PDF) - Philips Electronics

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TZA3047B

30 Mbits/s up to 1.25 Gbits/s laser drivers

Philips Electronics 

Philips Semiconductors

30 Mbits/s up to 1.25 Gbits/s laser drivers

Product specification

TZA3047A; TZA3047B

1 FEATURES

1.1 General

• 30 Mbits/s to 1.25 Gbits/s

• Bias current up to 100 mA

• Modulation current up to 100 mA

• Rise and fall times typical 120 ps

• Jitter below 30 ps (peak-to-peak value)

• Modulation output voltage up to 2 V dynamic range

• 1.2 V minimum voltage on the modulation output pin and

0.4 V minimum voltage on pin BIAS

• Retiming function via external clock with disable option

• Pulse width adjustment function with disable option

• Positive Emitter Coupled Logic (PECL), Low Voltage

Positive Emitter Coupled Logic (LVPECL) and

Current-Mode Logic (CML) compatible data and clock

inputs

• Internal common mode voltage available for AC-coupled

data and clock inputs and for single-ended applications

• 3.3 V supply voltage

• TZA3047A: AC-coupled laser for 3.3 V laser supply

• TZA3047B: DC-coupled laser for 3.3 V and 5 V laser

supply.

1.2 Control features

• Dual-loop control for constant and accurate optical

average power level and extinction ratio

• Optional average power loop control (up to 1.25 Gbits/s)

• Optional direct setting of modulation and bias currents.

1.3 Protection features

• Alarm function on operating current

• Alarm function on monitor current

• Enable function on bias and modulation currents

• Soft start on bias and modulation currents.

2 APPLICATIONS

• SDH/SONET optical transmission systems.

3 GENERAL DESCRIPTION

The TZA3047 is a fully integrated laser driver for optical

transmission systems with data rates up to 1.25 Gbits/s.

The TZA3047 incorporates all the necessary control and

protection functions for a laser driver application with very

few external components required and low power

dissipation. The dual-loop controls the average monitor

current in a programmable range from 150 µA to 1300 µA

and the extinction ratio in a programmable range from

5 to 15 (linear scale).

The design is made in the Philips BiCMOS RF process

and is available in a HBCC32 package or as bare die. The

TZA3047A is intended for use in an application with an

AC-coupled laser diode with a 3.3 V laser supply voltage.

The TZA3047B is intended for use in an application with a

DC-coupled laser diode for both 3.3 and 5 V laser supply

voltages.

4 ORDERING INFORMATION

TYPE NUMBER

TZA3047AVH

TZA3047BVH

TZA3047UH

NAME

HBCC32

HBCC32

−

PACKAGE

DESCRIPTION

plastic thermal enhanced bottom chip carrier; 32 terminals;

body 5 × 5 × 0.65 mm

bare die; 2 560 × 2 510 × 380 µm

VERSION

SOT560-1

−

2003 Jun 05

3

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