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VSC7967

PON Integrated 155 Mbps to 2.5 Gbps Burst-mode Laser Driver and Limiting Amplifier

Vitesse Semiconductor 

VSC7967

PON Integrated Burst-mode Laser Driver and Limiting Amplifier

GENERAL DESCRIPTION:

The VSC7967 is a multirate 1.25 Gbps integrated

laser driver and 2.5 Gbps limiting amplifier for

Passive Optical Network applications optimized

VSC7967

to reduce module cost. The device is intended to

drive distributed feedback (DFB) and Fabry Perot

(FP) lasers. A standard SPI port is provided for programming

integrated digital-to-analog converters for laser bias current,

modulation current, average power, and the limiting amplifier loss of

signal threshold. The VSC7967 is equipped with SFP-compliant fault

indicators, redundant disable control, Automatic Power Control,

temperature sensor, various signal monitors, and robust eye safety

features. The VSC7967 is available in a 5mm x 5mm 32-pin QFN

plastic package.

BLOCK DIAGRAMS:

Laser Driver

DATA

DATAN

BSRC = VCC

VCC

15 Ω

IMOD OUT

5Ω

OUTN

VCC

15 Ω

15 Ω

5Ω

BEN

BENN_TX_DIS

IMOD

Modulation and

Bias Control and Montoring

BSNK

IBIAS

BSNKN

MD

IMD

TX_FAULT

AOUT

VCC

10 kΩ

10 kΩ

Limiting Amplifier

DCRST[1:0]

DCRST1

RPK_STAGE

LA_SQSRC

LA_SQFORCE

Peak

Detector

and

Control

Output

Control

VCC

LOSMON

7 kΩ

LOS

LA_SQMON

DCRST[1:0]

DCRST2

50 Ω

50 Ω

LIN

100 Ω

S1

S2

S3

S4

LOUT

S5

LOUTN

Trademarks TM

Vitesse, ASIC-Friendly, FibreTimer, TimeStream, Snoop Loop, Super FEC, FOCUSConnect, Meigs-II, Meigs-IIe, Lansing, Campbell-I, Barrington,

PaceMaker, HOVCAT48, HOVCAT48e, HOVCAT192, HOVCAT192e, Micro PHY, FOCUS32, FOCUS16, IQ2200, NexSAS, VersaCAT, GigaStream, HawX,

SparX, StaX, VstaX, SimpliPHY,VeriPHY, ActiPHY, XFP PRO, SFP PRO, Smart-LINK, OctalMAC, EQ Technology are trademarks in the United States and/or

other jurisdictions of Vitesse Semiconductor Corporation. All other trademarks or registered trademarks mentioned herein are the property of their respective

holders.

Copyright © 2006

Vitesse Semiconductor Corporation (“Vitesse”) retains the right to make changes to its products or specifications to improve performance, reliability or

manufacturability. All information in this document, including descriptions of features, functions, performance, technical specifications and availability, is

subject to change without notice at any time. While the information furnished herein is held to be accurate and reliable, no responsibility will be assumed by

Vitesse for its use. Furthermore, the information contained herein does not convey to the purchaser of microelectronic devices any license under the patent

right of any manufacturer.

741 Calle Plano

Camarillo, CA 93012, USA

Tel: +1 805.388.3700

Fax: +1 805.987.5896

www.vitesse.com

sales@vitesse.com

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