HD-LINX
™
GS1508
HDTV Cable Driver
PRELIMINARY DATA SHEET
FEATURES
• SMPTE 292M compliant
• dual cable driving outputs optimized for driving data
up to 1.485Gb/s
• ±7% tolerance output
• >17dB output return loss
• minimum external components
• seamless interface with the HD-LINX™ family of
products
• low power
• standard packaging
APPLICATIONS
1.485Gb/s HDTV Serial Digital Receiver Interfaces for:
Routers, Distribution Amplifiers, Switchers, and other
transmitting equipment.
DESCRIPTION
The GS1508 is a first generation very high speed bipolar
integrated circuit designed to drive two 75Ω co-axial
cables. The GS1508 is a SMPTE 292M compliant cable
driver that directly interfaces with other Gennum HDTV
devices and can also be used as a general purpose high
speed cable driver.
The GS1508 features two complementary outputs whose
amplitude is controlled within a precise ±7% variation. The
output amplitude can be varied by adjusting the R
SET
resistor value.
The serial inputs can be AC coupled. The GS1508 is a low
power device that does not require external pull down
resistors. The GS1508 is packaged in an 8 pin SOIC and
operates from a single 5V power supply.
ORDERING INFORMATION
PART NUMBER
GS1508-CKA
GS1508-CTA
PACKAGE
8 pin SOIC
8 pin Tape and Reel
TEMPERATURE
0°C to 70°C
0°C to 70°C
GS1508
BANDGAP REFERENCE AND BIASING CIRCUIT
R
SET
SDI
SDI
INPUT
DIFFERENTIAL
PAIR
SDO
OUTPUT STAGE &
CONTROL
SDO
PATENT PENDING
BLOCK DIAGRAM
Revision Date: March 2000
GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com
www.gennum.com
Document No. 522 - 02 - 03
GENNUM [ GENNUM CORPORATION ]
