鈥?/div>
single +5 or -5 volt power supply operation
APPLICATIONS
鈥?Front-end cable equalization for digital video systems
鈥?Input equalization for serial digital distribution amplifiers,
routers, production switchers and other receiving
equipment
ORDERING INFORMATION
Part Number
GS9004CCKB
GS9004CCTB
Package Type
14 pin SOIC
14 pin SOIC Tape
Temperature Range
0
o
C to 70
o
C
0
o
C to 70
o
C
GS9004C
6
SIGNAL
STRENGTH
INDICATOR
FILTER
CONTROL
AGC
CAPACITOR
7
DEVICE DESCRIPTION
The Gennum GS9004C is an improved monolithic automatic
cable equalizer developed for SMPTE/EBU scrambled
NRZI Serial Di g i t a l Video signals.
While there are no plans to discontinue the GS9004C,
Gennum has developed a successor product with improved
features and performance called the GS9024. The GS9024
is recommended for new designs.
This device features DC restoration to pass the Pathological
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
鈩?/div>
loads (to V
TT
). These signals
can be used to feed cable driver circuits for Serial Distribution
Amplifier applications.
This device also incorporates an analog signal strength
indicator (SSI) which provides a 0.5 V to 0 V output relative
to V
CC
, indicating the amount of equalization being applied
to the signal.
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.
PEAK
DETECTOR
VOLTAGE
VARIABLE
FILTER
LOGIC
COMPARATOR
IN+
IN-
8
9
14
13
危
DC
RESTORER
DATA
DATA
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
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