VITESSE

SEMICONDUCTOR CORPORATION

Preliminary Data Sheet

VSC7958

2.5Gb/s High Speed Limiting Post Amplifier

for OC-48/SDH-16 Applications

Page 2

G52184-0, Rev 3.0

05/14/01

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

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

Internet: www.vitesse.com

Table 1: Electrical Specifications

NOTE:(1) These values are not measured during production test. These values are results of engineering characterization.

Symbol

Parameter

Min

Typ

Max

Units

Conditions

(1)

Input Voltage Swing

-

-

800

(1)

Input Voltage Swing

-

-

1600

Input Offset Voltage Swing

-

10

25

mV

320

500

1200

Differential Output Swing.

Input peak-to-peak

Output DC Offset Voltage

-

-0.5

-

V

Measured to ground

PW%

Output Pulse Width

90

100

110

%

Rise and Fall Time

-

100

-

ps

20%-80%, 25°C,

G

Small Signal Gain

26

30

45

dB

ended

(1)

Small Signal -3dB Bandwidth

-

3

-

GHz

(1)

Low Frequency -3dB Cutoff

-

30

-

kHz

(1)

Input Return Loss Reference to 50

Ω

-

15

-

dB

At 1.5GHz

(1)

Output Return Loss Reference to 50

Ω

-

15

-

dB

At 1.5GHz

Supply Current

-

80

100

mA

NF

(1)

Noise Figure

-

15

-

dB

8kHz to 18GHz

(1)

Input Referred Wide Band Noise

-

170

-

µV

rms

Total single-ended output

noise voltage divided by

small-signal gain. 8kHz to

18GHz

θ

JC

Thermal Resistance

-

30

-

°C/W

Junction-to-case