GS9024_05 Datasheet, PDF (1/16 Pages) Gennum Corporation – Automatic Cable Equalizer

Features
• automatic cable equalization
• fully compatible with SMPTE 259M
• typically equalizes greater than 350m of high
quality cable at 270Mb/s
• signal strength indicator
• output data muting when input data is lost
• output 'eye' monitor (OEM) with large signal
amplitude and power down option
• low power: 240mW at 5V
• 14 pin SOIC package
• programmable output data squelch for max cable
length limiting
• carrier detect with programmable threshold level
• serial data output "High Z" select to allow muxing of
EQ inputs
• Pb-free and Green
Applications
Front-end cable equalization for digital video systems;
Input equalization for serial digital distribution
amplifiers, routers, production switchers and other
receiving equipment.
GS9024 GENLINX™
Automatic Cable Equalizer
GS9024 Data Sheet
Description
The GS9024 is a high performance automatic cable
equalizer designed for serial digital data rates from
143Mb/s to 540Mb/s. The GS9024 receives either
single-ended or differential serial data and outputs
equalized differential signals at PECL levels (800mV).
The GS9024 provides up to 40dB of gain at 200MHz
which will typically result in equalization of greater than
350m at 270Mb/s of Belden 8281 cable.
The GS9024 incorporates an analog signal strength
indicator/carrier detect (SSI/CD) output indicating both
the presence of a carrier and the amount of equalization
applied to the signal. Optional external resistors allow
the carrier detect threshold level to be customized to the
user's requirement.
The GS9024 also features selectable High Z serial data
outputs eliminating the need for input muxing circuitry in
routers. In addition, the GS9024 provides an 'Output
Eye Monitor' (OEM) which allows the verification of
signal integrity after equalization, prior to reslicing.
The GS9024 operates from a single +5V or -5V power
supply and consumes only 240mW of power. Packaged
in a small 14 pin SOIC, the GS9024 is ideal for router
applications where high density component placement
is required.
SDI
SDI
OEM
+
-
EYE
MONITOR
++
VARIABLE GAIN
EQ STAGE
--
AUTO EQ
CONTROL
+-
AGC CD_ADJ
Block diagram
SDO
SDO
HIGH Z
SSI/CD
521-70-10 February 2005
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