TZA3041 View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

TZA3041

Gigabit Ethernet/Fibre Channel laser drivers

Philips Electronics 

Philips Semiconductors

Gigabit Ethernet/Fibre Channel laser

drivers

Product specification

TZA3041AHL; TZA3041BHL;

TZA3041U

handbook, full pagewidth

GND 1

MONIN 2

GND 3

TONE 4

TZERO 5

BGAP 6

VCC(G) 7

GND 8

TZA3041BHL

24 GND

23 ZERO

22 ONE

21 VCC(R)

20 DLOOPQ

19 DLOOP

18 VCC(R)

17 GND

MBK875

Fig.4 Pin configuration of TZA3041BHL.

FUNCTIONAL DESCRIPTION

The TZA3041AHL, TZA3041BHL and TZA3041U laser

drivers accept a 1.2 Gbits/s Non-Return to Zero (NRZ)

input data stream, and generate an output signal with

sufficient current to drive a solid state Fabry Perot (FP) or

Distributed FeedBack (DFB) laser. They also contain dual

loop control circuitry for stabilizing the true laser optical

power levels representing logic 1 and logic 0.

The input buffers present a high impedance to the data

stream on the differential inputs (pins DIN and DINQ);

see Fig.5. The input signal can be at a CML level of

approximately 200 mV (p-p) below the supply voltage, or

at a PECL level up to 800 mV (p-p). The inputs can be

configured to accept CML signals by connecting pins DIN

and DINQ to VCC(R) via external 50 Ω pull-up resistors.

If PECL compatibility is required, the usual Thevenin

termination can be applied.

handbook, full pagewidth

10 kΩ

DIN, DLOOP

100 Ω

VCC(R)

10 kΩ

100 Ω

DINQ, DLOOPQ

2002 Aug 13

GND MGS910

Fig.5 DIN/DINQ and DLOOP/DLOOPQ inputs.

6

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