™
GENLINX GS9004C
Serial Digital Cable Equalizer
DATA SHEET
DEVICE DESCRIPTION
FEATURES
• automatic cable equalization
TheGennumGS9004Cisanimproved monolithicautomatic
cable equalizer developed for SMPTE/EBU scrambled
NRZI Serial Digital Video signals.
• typically greater than 350 m of high quality cable at
270 Mb/s
While there are no plans to discontinue the GS9004C,
Gennumhasdevelopedasuccessorproductwithimproved
features and performance called the GS9024. The GS9024
is recommended for new designs.
• typically 300 m of high quality cable at 360 Mb/s
• improved jitter response vs cable length
• drop in replacement for GS9004B
• capability to drive 50 Ω loads (to VTT
)
This device features DCrestorationtopassthePathological
Test Signals and fully automatic equalization in order to
meet the SMPTE 259M Serial Interface Standard. The
DATA and DATA outputs typically deliver 800 mV (p-p)
equalized signals into 50 Ω loads (to VTT). These signals
canbeusedtofeedcabledrivercircuitsforSerialDistribution
Amplifier applications.
• fully compatible with SMPTE 259M and operational to
400 Mb/s
• signal strength indicator
• output 'eye' monitor
• 14 pin SOIC packaging
This device also incorporates an analog signal strength
indicator (SSI) which provides a 0.5 V to 0 V output relative
to VCC, indicating the amount of equalization being applied
to the signal.
• single +5 or -5 volt power supply operation
APPLICATIONS
• Front-end cable equalization for digital video systems
The GS9004C features an OUTPUT 'EYE' MONITOR
(OEM), which allows verification of signal integrity after
equalization, prior to reslicing. Operating with a single +5
or -5 volt supply, the GS9004C typically draws 52 mA of
current.
• Input equalization for serial digital distribution amplifiers,
routers, production switchers and other receiving
equipment
ORDERING INFORMATION
Part Number
Package Type
Temperature Range
o
o
GS9004CCKB
GS9004CCTB
14 pin SOIC
0 C to 70 C
o
o
14 pin SOIC Tape
0 C to 70 C
GS9004C
AGC
CAPACITOR
6
FILTER
7
CONTROL
SIGNAL
STRENGTH
INDICATOR
PEAK
DETECTOR
VOLTAGE
VARIABLE
FILTER
LOGIC
COMPARATOR
14
13
8
DATA
DATA
IN+
IN-
DC
RESTORER
Σ
9
3 OUTPUT 'EYE'
MONITOR
FUNCTIONAL BLOCK DIAGRAM
Document No. 521 - 72 - 00
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3 tel. +1 (905) 632-2996 fax. +1 (905) 632-5946
Web Site: www.gennum.com E-mail: info@gennum.com