VSC7962RO 查看數據表（PDF） - Vitesse Semiconductor

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VSC7962RO

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

Vitesse Semiconductor 

VITESSE

SEMICONDUCTOR CORPORATION

3.125Gb/s PECL Limiting Amplifier with LOS Detect

and Laser Driver with Automatic Power Control

Advance Product Information

VSC7962

Electrical Characteristics

Table 1: Limiting Amplifier DC Specifications

Symbol

Parameter

Min Typ Max Units

Conditions

VCC

Power Supply Range

3.135

5.5

V

ICC

Power Supply Current(1)

31

mA VCC = 3.3V

IEE

Power Supply Current(1)

38

mA VCC = 3.3V

ICCSQ Power Supply Current when Squelched(1)

21

mA VCC = 3.3V

IEESQ

Power Supply Current when Squelched(1)

24

mA VCC = 3.3V

ISQ

Squelch Input Current

0

400 µA

PSSR Power Supply Rejection Ratio

20

30

dB f < 2MHz

NOTE: (1) See Figure5 for supply current measurement setup.

Table 2: Laser Driver DC Specifications

Symbol

Parameter

VCC

Power Supply Voltage Range

ICC

Supply Current

IBIAS

Bias Current Range

IBIAS-OFF Bias Off Current

SBIAS Bias Current Stability

VRMD

IMD

Bias Current Absolute Accuracy

Monitor Diode Reverse Bias Voltage

Monitor Diode Reverse Current Range

Monitor Diode Bias Setpoint Stability

Monitor Diode Bias Absolute Accuracy

IMOD

Modulation Current Range

IMOD-OFF Modulation Off Current

Modulation Current Absolute Accuracy

Modulation Current Stability

Min

3.125

1

1.5

18

-480

-15

5

-480

Typ

TBD

230

900

±15

50

90

±15

-50

250

Max Units

Conditions

3.465 V

RMODSET=7.3kΩ,

45

mA RBIASMAX=4.8kΩ

IBIAS and IMOD excluded VCC=5V

100 mA Voltage at BIAS pin=(VCC-1.6)

100 µA ENABLE=low or DISABLE=high(1)

ppm/°C APC open loop. IBIAS=100mA

APC open loop. IBIAS=1mA

% Refers to part-to-part variation.

V

1000

480

15

µA

ppm/°C

IMD=1mA(1)

IMD=18µA(1)

% Refers to part-to-part variation.

60 mA

200 µA ENABLE=low or DISABLE=high(2)

% See Note 2

480 ppm/°C IMOD=60mA

IMOD=5mA

NOTES: (1) Both IBIAS and IMOD will turn off if any of the current set pins are grounded. (2) Assumes laser diode to monitor diode transfer

function does not change with temperature.

Page 2

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

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

Internet: www.vitesse.com

G52361-0, Rev 2.1

05/01/01

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