VSC7960W 查看數據表（PDF） - Vitesse Semiconductor

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VSC7960W

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

Table 8: Pin Description

Pin Name

Pad Name

GND

GNDA or

GND

VCC

VCC or VCCA

SQUELCH

CZ1

CZ2

IN+

IN-

LEVEL

SQ

CZ1

CZ2

LAINP

LAINM

LVL

TH

LOS

LOS

BIAS

OUT+

OUT-

TH

LOS

LOS

BIAS

OUT+

OUT-

Pin/Pad

Number

1, 4, 7, 8,

11, 16,

17, 23,

30, 34,

41, 42, 44

3, 19, 22,

31, 37,

40, 43,

45, 48

2

5

6

9

10

12

13

14

15

18

20

21

Section

Both

Both

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Limiting

Amplifier

Laser

Driver

Laser

Driver

Laser

Driver

Ground

Description

3.3V Supply

Squelch Input. Squelch is disabled if this pin in unconnected or

set low. When SQUELCH is high, OUT+ and OUT- are forced

to static levels. See Detailed Description section.

Offset Correction Loop Capacitor. Place capacitor between this

pin and CZ2 to alter time constant of offset correction loop.

See Detailed Description section.

Offset Correction Loop Capacitor. Place capacitor between this

pin and CZ1 to alter time constant of offset correction loop.

See Detailed Description section.

Noninverted Limiting Amplifier Input Signal

Inverted Limiting Amplifier Input Signal

Output Current Level. This pin may be either connected to

GND or left unconnected. Connecting to GND causes output

current to be 20mA. The output is 16mA when unconnected.

See Detailed Description section.

Loss of Signal (LOS) Threshold. Connect a resistor from this

pin to GND to set the input signal level at which LOS outputs

will be asserted. See Applications Information section.

Inverted Loss of Signal Output. LOS is high for input signals

above the threshold programmed by TH. See Detailed

Description section.

Noninverted Loss-of-Signal Output. LOS is low for input

signals above the threshold programmed by TH. See Detailed

Description section.

Laser Bias current output

Noninverted Laser Modulation Current Output. IMOD flows

when input data is high.

Inverted Laser Modulation Current Output. IMOD flows when

input data is low.

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

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