DATA SHEET
GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2055
Japan Branch: A-302, M i yamae Village, 21042 Mi yamae, Suginamiku, Tokyo 168, Japan tel. (03) 3247-8838 fax (03) 3247-8839
GENLINX
TM
GS9009 Cable Driver
with Four Adjustable Outputs
FEATURES
two output pairs, adjustable from 0 to 1100 mVp-p
into 75
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
250 mW power dissipation
interfaces with
GENLINX
TM
GS9002, GS9004A,
GS9005A and GS9015A
DEVICE DESCRIPTION
The
GENLINX
TM
GS9009 is a bipolar integrated circuit
designed to drive four 75
co-axial cables at data rates
exceeding 400 Mb/s. It directly interfaces with other
GENLINX
TM
devices and can also be used as a general
purpose high speed cable driver.
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 0 mV to as high as 1100 mV with little
change in other performance parameters. Performance is
g u a r a n t e e d f o r o u t p u t l e v e l s b e t w e e n 600 m V a n d
1000 mV. The gain of the output stages is varied by
adjusting the V
SET
voltage with respect to an internal
bandgap reference voltage V
REF
.
Pinout is compatible with the GS9007 by interchanging
pins 3,4,5,6,9,10,11,12 on the GS9009 with pins 1,2,3,4,5,6,7,8
on the GS9007. In this way, a layout can be made for either
device depending on whether adjustability is desired or
not.
The GS9009 is packaged in a 14 pin SOIC, and operates
from a single +5 or -5 volt supply consuming typically only
250 mW of power.
Document No. 520 - 75 - 5
Revision Date: January 1994
FUNCTIONAL BLOCK DIAGRAM
ORDERING INFORMATION
APPLICATIONS
SMPTE 259M Serial Digital Systems (4:2:2 & 4sc)
Other Serial Digital Video Interfaces - 360 Mb/s
General purpose high speed driver applications
PIN CONNECTIONS
NC
NC
OUTPUT 1
OUTPUT 1
OUTPUT 2
NC
INPUT
OUTPUT 2
VSET
INPUT
VEE
VREF
NC
VCC
14
9
8
10
12
13
11
1
4
3
6
5
7
2
GS9009
Part Number Package Type Temperature Range
GS9009 - CKB 14 Pin SOIC 0
to 70
C
GS9009
INPUT
V
SET
BAND-GAP
REFERENCE
INPUT BUFFER
&
DC RESTORE
V
REF
INPUT
GAIN
CONTROL
OUTPUT 1
V
CC
(GND)
OUTPUT 1
OUTPUT 2
OUTPUT 2
GND (V
EE
)
OUTPUT
DRIVER
OUTPUT
DRIVER
Patent No. 5,426,389.
2
520 - 75 - 5
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE
Supply Voltage (V
S
)
5.5 V
Input Voltage Range (any input)
V
S
-0.5 V
Power Dissipation
300 mW
Operating Temperature Range
0
C
T
A
70
C
Storage Temperature Range
-65
C
T
S
150
C
Lead Temperature (soldering, 10 sec)
260
C
Conditions: V
S
= 5V, T
A
= 0
C to 70
C, R
L
= 150
to GND and 144
AC coupled unless otherwise shown
GS9009 CABLE DRIVER - DC ELECTRICAL CHARACTERISTICS
GS9009 CABLE DRIVER - AC ELECTRICAL CHARACTERISTICS
Conditions: V
S
= 5V, T
A
= 0
C to 70
C, R
L
= 150
to GND and 144
AC coupled unless otherwise shown
Output Amplitudes across
75
Load (See Note 1)
Output Amplitude
Temperature Coefficient
(See Note 2)
Output
Rise/Fall Times (20% to 80%)
NOTE 1.
V
OUT
is measured across a correctly terminated load, back matched to the device. The peak to peak voltage of the device
itself is 2 x V
OUT
.
2.
V
OUT
is proportional to V
SET
and V
SET
may be an external low impedance, high stability supply. In this case the amplitude
temperature coefficient will not be guaranteed.
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS NOTES
Supply Voltage
V
S
4.5
5.0
5.5
volts
Power Consumption
P
D
4 x150
Loads DC
-
250
290
mW
Supply Current
I
S1
1% Accuracy, T
A
= 25
o
C
-
105
110
mA
V
SET
= (0.667) V
REF
Supply Current
I
S2
DC No Loads, T
A
= 25
o
C
-
16
20
mA
Reference Voltage
V
REF
10 k
to ground
-
1.2
-
volts
Input Signal Rise/Fall Times
t
R
,t
F
-
-
750
ps
PARAMETER SYMBOL
CONDITIONS
MIN
TYP MAX UNITS NOTES
Input Signal Amplitude
V
IN
700
800
1000
mVp-p
V
SET
= (0.5) V
REF
540
600
660
mVp-p Note 1 & 2
V
OUT
V
SET
= (0.667) V
REF
720
800
880
mVp-p Note 1 & 2
V
SET
= (0.833) V
REF
900
1000
1100 mVp-p Note 1 & 2
V
SET
= (0.5) V
REF
-
25
100
ppm/
o
C
T
C
V
SET
= (0.667) V
REF
-
-12
80
ppm/
o
C
V
SET
= (0.833) V
REF
-
-45
80
ppm/
o
C
V
SET
= (0.5) V
REF
400
630
800
ps
t
R
,t
F
V
SET
= (0.667) V
REF
400
575
800
ps
V
SET
= (0.833) V
REF
400
530
800
ps
Output Overshoot
t
R
=
t
F
= 600 ps
-
0
-
% See Figure 3
Jitter
t
J
at 270 Mb/s
-
-
25
ps
Propagation Delay
t
P
- 1 - ns
3
520 - 75 - 5
INPUT / OUTPUT CIRCUITS
V
CC
0.5p
SERIAL
INPUTS
400
V
CC
V
REF1
V
REF1
+ V
REF2
Fig. 1 Input Circuit (Pins 11 and 12)
INPUT SIGNAL
+
10
0.1
1.0
1 2 3 4
1.0
OUTPUT -2
(75
)
+5V
0.1
INPUT SIGNAL
1.0
1.0
OUTPUT -2
(75
)
OUTPUT -1
(75
)
OUTPUT -1
(75
)
1.8p
1.8p
1.8p
1.8p
68
68
68
68
10k
OUTPUT LEVEL
ADJUST
8
9
10
5
6
7
3
4
2
1
11
12
13
14
GS9009
Fig. 4 Split Supply Interfacing
All resistors in ohms, all capacitors in microfarads unless otherwise stated.
Resistors marked 1, 2, 3, and 4 are 150
each.
All resistors in ohms, all capacitors in microfarads unless otherwise stated.
Fig. 3 Typical Application Circuit
+5V
-5V
10
11
0.1F
0.1F
-2V
ECL
DRIVER
GS9009
VCC
400
400
V
OUT
V
OUT
V
CC
V
CC
Fig. 2 Output Circuit (Pins 3, 4 and 5, 6)
4
520 - 75 - 5
Gennum Corporation assumes no responsibility for the use of any circuits described herein and makes no representations that they are free from patent infringement.
Copyright January 1993 Gennum Corporation. All rights reserved. Printed in Canada.
DOCUMENT
IDENTIFICATION
PRODUCT PROPOSAL
This data has been compiled for market investigation purposes
only, and does not constitute an offer for sale.
ADVANCE INFORMATION NOTE
This product is in development phase and specifications are
subject to change without notice. Gennum reserves the right to
remove the product at any time. Listing the product does not
constitute an offer for sale.
PRELIMINARY DATA SHEET
The product is in a preproduction phase and specifications are
subject to change without notice.
DATA SHEET
The product is in production. Gennum reserves the right to make
changes at any time to improve reliability, function or design, in
order to provide the best product possible.
CAUTION
ELECTROSTATIC
SENSITIVE DEVICES
DO NOT OPEN PACKAGES OR HANDLE
EXCEPT AT A STATIC-FREE WORKSTATION
REVISION NOTES
Updated to Data Sheet, Figure 4 added
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