GENLINX
™
II
GS9029 Quad Output
Serial Digital Video Cable Driver
DATA SHEET
FEATURES
• SMPTE 259M compliant
• four isolated outputs (two complimentary pairs),
adjustable from 50mV-1000mV into 75Ω loads
• operational from 143Mb/s to 540Mb/s and beyond
• nominal 500ps rise/fall times
• precise ±7.5% output amplitudes
• 40% system power reduction over GS9007
• 75Ω on-chip input termination resistors
• input hysteresis
• operational down to 80mV input amplitude
• superior output isolation
• "Bus Through" expansion port for fan out
requirements
APPLICATIONS
4ƒsc, 4:2:2 and 4:4:4:4 serial digital video co-axial
transmission interfaces from 143 to 540Mb/s; General
purpose cable driving applications (co-axial cable or UTP).
The GS9029 is packaged in a 16 pin narrow SOIC and
operates from a single +5 or -5 volt supply. Typical system
power consumption is 320mW which is 40% less than the
GS9007.
ORDERING INFORMATION
PART NUMBER
GS9029-CKD
GS9029-CTD
PACKAGE
16 pin SOIC Narrow
16 pin SOIC Tap
TEMPERATURE
0°C to 70°C
0°C to 70°C
DESCRIPTION
The GS9029 is a second generation bipolar integrated
circuit designed to drive four 75Ω co-axial cables.
GS9029
The GS9029 features two pairs of complementary outputs
whose amplitude is controlled within ±7.5%. The output
signal levels are also adjustable from 50mVp-p up to
1000mVp-p with little change in other performance
parameters. The amplitude of the output stage is varied by
adjusting the R
SET
resistor value. The patented current
mode outputs ensure superior output return loss and
minimal over shoot. The rise/fall time circuitry allows wide
range operation and provides symmetrical balanced
outputs to reject power supply noise. In addition high output
isolation ensures that the cable driver outputs are not
affected by the performance or status of other outputs.
Operational with input amplitudes as low as 80mV, the
GS9029 provides a robust serial interface.
R
SET0
BANDGAP REFERENCE & BIASING CIRCUIT
R
SET1
SDI/T
SDI/T
75
75
SDO0
SDO0
SDI
SDI
INPUT
DIFFERENTIAL
PAIR WITH
HYSTERESIS
OUTPUT STAGE &
RISE/FALL TIME
CONTROL CIRCUIT
SDO1
SDO1
BLOCK DIAGRAM
Revision Date: February 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. 521 - 97 - 02
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply Voltage (V
S
=V
CC
-V
EE
)
Input Voltage Range (any input)
Maximum Die Temperature
VALUE
5.5V
-0.3V to (V
CC
+0.3)V
125°C
0°C
≤
T
A
≤
70°C
-65°C
≤
T
S
≤
150°C
260°C
GS9029
Operating Temperature Range
Storage Temperature Range
Lead Temperature (soldering, 10 sec)
DC ELECTRICAL CHARACTERISTICS
V
CC
= 5V, V
EE
= 0V, T
A
= 0°C TO 70°C unless otherwise specified. Specifications assume 800mV output amplitude into 75Ω terminated line.
PARAMETER
Supply Voltage
Power (system power)
SYMBOL
V
CC
P
S
Ι
CC
CONDITIONS
Operating Range.
Driving four 75Ω cables.
R
SET
= 54.9Ω.
Driving four 75Ω cables.
R
SET
= 54.9Ω.
MIN
4.75
-
TYP
5.00
320
MAX
5.25
350
UNITS
V
mW
TEST
LEVEL
1
5
Supply Current
-
64
70
mA
1
Common Mode Input
Voltage
Differential Input
Voltage
Common Mode Output
Voltage Range
Differential Output
Voltage
V
CM_IN
V
DIFF
V
CM_OUT
V
OUT
R
SET
= 54.9Ω
R
SET
= 43.2Ω
2.4+(V
DIFF/2
)
80
-
V
CC
-(V
DIFF/2
)
1000
V
6, 7
-
mV
6, 7
-
V
CC
-V
OUT
800
1000
25
-
V
5
740
925
-
860
1075
-
mV
mV
mV
1
1
7
Input Hysteresis
TEST LEVELS
1. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges.
2. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature ranges using
correlated test.
3. Production test at room temperature and nominal supply voltage.
4. QA sample test.
5. Calculated result based on Level 1,2, or 3.
6. Not tested. Guaranteed by design simulations.
7. Not tested. Based on characterization of nominal parts.
8. Not tested. Based on existing design/characterization data of similar product.
2
521 - 97 - 02
AC ELECTRICAL CHARACTERISTICS
V
CC
= 5V, V
EE
= 0V, T
A
= 0°C TO 70°C unless otherwise specified. Specifications assume 800mV output amplitude into 75Ω terminated line.
PARAMETER
Serial Data Bit Rate
Additive Jitter
SYMBOL
CONDITIONS
MIN
143
TYP
-
25
25
500
50
5
50
17
MAX
540
-
-
700
100
-
100
-
UNITS
Mb/s
ps p-p
ps p-p
ps
ps
% V
OUT
ps
dB
NOTES
TEST
LEVEL
1
270Mb/s
540Mb/s
-
-
400
-
-
-
1, 2
7
GS9029
Output Rise/Fall Times
Rise/Fall Times Mismatch
Overshoot
Duty Cycle Distortion
Output Return Loss
NOTES
t
R
, t
F
20% - 80%
1
5
2
7
1
2
7
5MHz - 540MHz
-
1. 6σ additive jitter measuring Pseudo random bit sequence (2 -1).
2. Measured with Gennum Evaluation Board (EB9029V1).
TEST LEVELS
1. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature
ranges.
2. Production test at room temperature and nominal supply voltage with guardbands for supply and temperature
ranges using correlated test.
3. Production test at room temperature and nominal supply voltage.
4. QA sample test.
5. Calculated result based on Level 1,2, or 3.
6. Not tested. Guaranteed by design simulations.
7. Not tested. Based on characterization of nominal parts.
8. Not tested. Based on existing design/characterization data of similar product.
23
3
521 - 97 - 02
PIN CONNECTIONS
R
SET1
V
CC
SDO1
SDO1
1
2
3
4
5
6
7
8
GS9029
TOP VIEW
16
15
14
13
12
11
10
9
R
SET0
V
EE
SDO0
SDO0
NC
NC
SDI/T
SDI/T
GS9029
NC
NC
SDI
SDI
PIN DESCRIPTIONS
NUMBER
1
2
3, 4
5,6,11,12
7, 8
9, 10
SYMBOL
R
SET1
V
CC
SDO1,SDO1
NC
SDI,SDI
SDI/T, SDI/T
I
I
O
TYPE
I
DESCRIPTION
Amplitude setting resistor for SDO1, SDO1.
Most positive supply voltage.
Second differential serial output (inverse and true).
No connect.
Serial data inputs (inverse and true).
Dual mode pin:
a) “Bus Through” pins for serial data inputs when additional GS9029s are used on the same bus.
b) Termination pins when using a single GS9029, or when the device is the last on an input bus.
13, 14
15
16
SDO0,SDO0
V
EE
R
SET0
I
O
First differential serial output (true and inverse).
Most negative supply voltage.
Amplitude setting resistor for SDO0, SDO0.
4
521 - 97 - 02
TYPICAL PERFORMANCE CURVES
(V
S
= 5V, T
A
= 25°C unless otherwise shown. Devices guard band tested to 70°C only.)
530
525
520
515
510
GS9029
TIME (ps)
505
500
495
490
485
480
0
10
20
30
40
50
60
70
80
TEMPERATURE (˚C)
Fig. 1 Rise/Fall vs. Temperature
Fig. 4 540Mb/s Eye Diagram
1.62
40
35
1.61
OUTPUT LEVEL (V)
30
JITTER p-p (ps)
1.60
25
360Mb/s
177Mb/s
143Mb/s
540Mb/s
270Mb/s
20
1.59
15
1.58
0
10
20
30
40
50
60
70
80
10
0
20
40
60
80
TEMPERATURE (˚C)
TEMPERATURE (˚C)
Fig. 2 Serial Data Output Level vs. Temperature
Fig. 5 Peak to Peak Additive Jitter vs. Temperature
Fig. 3 270Mb/s Eye Diagram
5
521 - 97 - 02
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