VSC7927KFRL 查看數據表（PDF） - Vitesse Semiconductor

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VSC7927KFRL

SONET/SDH 2.5Gb/s Laser Diode Driver

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7927

SONET/SDH 2.5Gb/s Laser Diode Driver

Features

• Rise Times of Less Than 100ps

• High Speed Operation

(Up to 2.5 Gb/s NRZ Data)

• Differential or Single-Ended Inputs

• Single Supply

• ECL-Compatible Clock and Data Inputs

• Direct Access to Modulation and Bias FETs

• Data Density Monitors

• On-Chip Reclocking Register

• On-Chip Mux for Clocked or Non-clocked Appli-

cations

• On-Chip 50Ω Input Termination: Clock and Data

General Description

The VSC7927 is a single 5V supply, 2.5 Gb/s laser diode driver with direct access to the laser modulation

and bias FETs. 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 50Ω.

Applications

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

• Full Speed Fibre Channel (1.062Gb/s)

VSC7927 Block Diagram

DIN

DINTERM*

NDIN

50 Ω**

50 Ω**

M

DQ

U

X

CLK

CLKTERM*

NCLK

50 Ω**

50 Ω**

SEL

*Terminated to Off-chip Capacitor

**On Die Components

MK

NMK

DCC

VIP

VIB

IMOD

IOUT

NIOUT

IBIAS

IBIAS

MIP

MIB

G52201-0, Rev 3.0

04/05/01

© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012

Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com

Internet: www.vitesse.com

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