GENLINX
™
GS9008A Cable Driver
with Two Adjustable Outputs
DATA SHEET
KEY FEATURES
• two output pairs, adjustable from 0 to 1100mVp-p into
75
Ω
loads
• nominal 600 ps rise and fall times
• accepts SMPTE and standard ECL input levels
• operates from a single +5 or -5 volt supply
• on-chip DC restoration for low jitter
• 170mW power dissipation
• interfaces with GENLINX™ GS9002, GS9004A,
GS9005A and GS9015A
• Pb-free and Green
APPLICATIONS
•
•
•
SMPTE 259M Serial Digital Systems (4:2:2 & 4ƒsc)
Other Serial Digital Video Interfaces — 360Mb/s
General purpose high speed driver applications
DESCRIPTION
The GENLINX™ GS9008A is a bipolar integrated circuit
designed to drive two 75
Ω
co-axial cables at data rates
exceeding 400Mb/s. It directly interfaces with other
GENLINX™ devices and can also be used as a general
purpose high speed cable driver.
While there are no plans to discontinue the GS9008A,
Gennum has developed a successor product with improved
features and performance called the GS9028. The GS9028
is recommended for new designs.
GS9008A
NOT RECOMMENDED FOR NEW DESIGNS
The differential inputs are AC-coupled and internally DC-
restored which allows correct passage of pathological
check codes associated with the serial digital standards.
Even though the inputs are AC coupled, static protection
diodes at each input restrict the DC differential so that if the
driving source uses the opposite polarity power supply,
external DC blocking capacitors must be used.
Correctly terminated output signal levels are adjustable
from as low as 0mV to as high as 1100mV with little change
in other performance parameters. Performance is
guaranteed for output levels between 600mV and 1000mV.
The gain of the output stages is varied by adjusting the V
SET
voltage with respect to an internal band gap reference
voltage V
REF
.
The GS9008A is packaged in an 8 pin SOIC, and operates
from a single +5 or -5 volt supply consuming typically only
170mW of power.
PIN CONNECTIONS
OUTPUT 1
1
2
8
7
VCC
INPUT
INPUT
VEE
OUTPUT 1
VSET
VREF
GS9008A
3
4
6
5
ORDERING INFORMATION
PART NUMBER
GS9008ACKA
GS9008ACKAE3
PACKAGE TYPE
8 Pin SOIC
8 Pin SOIC
TEMPERATURE RANGE
0° to 70°C
0° to 70°C
Pb-FREE AND GREEN
No
Yes
FUNCTIONAL BLOCK DIAGRAM
GS9008A
V
SET
GAIN
CONTROL
V
CC
(GND)
INPUT
INPUT
INPUT BUFFER
&
DC RESTORE
OUTPUT
DRIVER
OUTPUT 1
OUTPUT 1
V
REF
BAND-GAP
REFERENCE
GND (V
EE
)
Revision Date: June 2004
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. 29781 - 1
GENNUM [ GENNUM CORPORATION ]
