VSC7960 查看數據表（PDF） - Vitesse Semiconductor

零件编号

产品描述 (功能)

生产厂家

VSC7960

3.125Gb/s CML Limiting Amplifier with LOS Detect and Laser Driver with Automatic Power Control

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

Advance Product Information

VSC7960

3.125Gb/s CML Limiting Amplifier with LOS Detect

and Laser Driver with Automatic Power Control

Pad Name

VCC

DATA+

DATA-

VCC

GND

GND

VCC

GNDA

VCCA

LAOM

LAOP

VCC

Pin Name

VCC

DATA+

DATA-

VCC

GND

GND

VCC

GND

VCC

LAO-

LAO+

VCC

Pad/Pin

Number

37

38

39

40

41

42

43

44

45

46

47

48

Section

Laser Driver

Laser Driver

Laser Driver

Laser Driver

Laser Driver

Laser Driver

Laser Driver

Limiting Amplifier

Limiting Amplifier

Limiting Amplifier

Limiting Amplifier

Limiting Amplifier

X-Coordinate

(µm)

80.975

80.975

80.975

80.975

80.975

80.975

80.975

80.975

80.975

80.975

80.975

80.975

Y-Coordinate

(µm)

2414.475

2224.475

2034.475

1844.475

1654.475

1464.475

1274.475

1084.475

894.475

704.475

514.475

324.475

Detailed Description

The VSC7960 is a combination limiting amplifier and high-speed laser driver with Automatic Power Con-

trol (APC). The device is designed to operate up to 3.125Gb/s with a 3.3V supply. The limiting amplifier pro-

vides Loss of Signal (LOS) detect, output offset correction, and output squelch. The limiting amplifier of the

VSC7960 has Current-Mode Logic (CML) outputs. The VSC7962 is identical to the VSC7960 except with

PECL limiting amplifier outputs. The laser driver data and clock inputs support PECL inputs as well as other

inputs that meet the common-mode voltage and differential voltage swing specifications. The differential pair

output laser driver stage is capable of driving up to 60mA into the laser with typical rise and fall times of 60ps.

To allow for larger output swings, the VSC7960 was designed to be AC-coupled to the laser cathode with a

pull-up inductor for DC-biasing. This configuration will isolate laser forward voltage from the output circuitry

and will allow the output at OUT+ to swing above and below the supply voltage VCC. The laser driver output

bias and modulation currents may be easily controlled via external circuitry. The key features of the VSC7960

are Automatic Power Control, Loss of Signal detect, low power supply current, and fast rise and fall times.

G52359-0, Rev 2.1

5/01/01

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

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

Internet: www.vitesse.com

Page 11

Share Link: