VSC7926CA 查看數據表（PDF） - Vitesse Semiconductor

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VSC7926CA

SDH/SONET 2.5Gbits/sec Laser Diode Driver

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7926

SDH/SONET 2.5Gbits/sec

Laser Diode Driver

Features

• Rise Times Less Than 100ps

• Single Supply

• High Speed Operation

(Up to 2.5Gb/s NRZ Data)

• Differential Inputs

• Direct Access to Modulation and Bias FET’s

• Data Density Monitors

• On-chip Reclocking Register

Introduction

The VSC7926 is a single 5V supply, 2.5Gb/s laser diode driver with direct access to the laser modulation

and bias FET’s. Laser bias and modulation currents are set by external components allowing precision monitor-

ing and setting of the current levels. Data density outputs are provided to allow the user to adjust the laser bias

in high unbalanced data applications. Clock and data inputs are differentially terminated to 50 Ohms.

Applications

• SDH/SONET @ 622Mb/s, 1.244Gb/s, 2.488Gb/s

• Full Speed Fibre Channel (1.062Gb/s)

VSC7926 Block Diagram

DIN

DINTERM*

NDIN

50 Ω **

50 Ω **

CLK

CLKTERM*

NCLK

50 Ω **

50 Ω **

*Terminated to Off-chip Capacitor

**On Die Components

DQ

MK

NMK

DCC

DCC

VIP

VIB

IMOD

IOUT

NIOUT

IBIAS

IBIAS

MIP

MIB

G52188-0, Rev 2.1

6/1/98

© VITESSE SEMICONDUCTOR CORPORATION

741 Calle Plano, Camarillo, CA 93012 • 805/388-3700 • FAX: 805/987-5896

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