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VSC7959 Datasheet(PDF) 1 Page - Vitesse Semiconductor Corporation

Part No. VSC7959
Description  3.125Gb/s CML Limiting Amplifier with LOS Detect
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Maker  VITESSE [Vitesse Semiconductor Corporation]
Homepage  http://www.vitesse.com
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VSC7959 Datasheet(HTML) 1 Page - Vitesse Semiconductor Corporation

 
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VITESSE
SEMICONDUCTOR CORPORATION
Advance Product Information
VSC7959
3.125Gb/s CML Limiting Amplifier with LOS Detect
G52358-0, Rev 2.0
Page 1
02/09/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Features
Applications
General Description
The VSC7959 is a single supply limiting amplifier with Loss of Signal (LOS) detect for SONET/SDH and
Fibre Channel applications up to 3.125Gb/s. The VSC7959 provides a constant output signal swing for a wide
range of input voltages and has Current-Mode Logic (CML) outputs. The VSC7961 provides the same function-
ality as the VSC7959 with positive emitter-coupled logic (PECL) outputs. Key features of the VSC7959 are its
RMS power detectors for programmable LOS detection, optional output squelch, adjustable output levels,
excellent jitter performance, and fast edge rates. The VSC7959 is available in die form or in a TSSOP-16 pack-
age.
Block Diagram
• 3.3V or 5V Power Supply
• Typical Supply Current of 32mA
• Current-Mode Logic Outputs
• Optional Output Squelch
• Loss of Signal Detect
• Output Offset Correction
• Rise/Fall Times Faster than 100ps
• Packages: TSSOP-16, Bare Die
VSC7959
100
IN+
IN-
RMS Power
Detect and
Control
Lowpass Filter
10pF
Offset Correction
8k
Output Control
8k
VCC
VCC
LOS
SQUELCH
LEVEL
OUT+
OUT-
LOS
CZ1
CZ2
TH
• SONET/SDH at 622Mb/s, 1.244Gb/s, 2.488Gb/s,
and 3.125Gb/s
• Full-Speed Fibre Channel (1.062Gb/s)
• Small Form Factor (SFF) Receivers
• ATM Optical Receivers


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