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GS1528A / GS9068A HD-LINX II
Multi-Rate Dual Slew-Rate Cable Driver
GS1528A / GS9068A Data Sheet
30953 - 4
January 2006
1 of 16
Features
GS1528A
SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
Dual coaxial cable driving outputs with selectable
slew rate
50
differential PECL input
Pb-free and RoHS compliant
Pin compatible with GS9068A HD-LINX II SD SDI
cable driver
Seamless interface to other HD-LINX II family
products
Single 3.3V power supply operation
Operating temperature range: 0C to 70C
GS9068A
SMPTE 259M and SMPTE 344M compliant
Dual coaxial cable driving outputs
50
differential PECL input
Pb-free and RoHS compliant
Pin compatible with GS1528A HD-LINX II multirate
SDI dual slew-rate cable driver
Seamless interface to other HD-LINX II family
products
Single 3.3V power supply operation
Operating temperature range: 0C to 70C
Applications
GS1528A
SMPTE 292M, SMPTE 344M and SMPTE 259M
Coaxial Cable Serial Digital Interfaces.
GS9068A
SMPTE 259M and SMPTE 344M Coaxial Cable
Serial Digital Interfaces.
Description
The GS1528A/9068A is a second generation
high-speed BiCMOS integrated circuit designed to drive
one or two 75
co-axial cables.
The GS1528A may drive data rates up to 1.485Gb/s
and provides two selectable slew rates in order to
achieve compliance to SMPTE 259M, SMPTE 344M
and SMPTE 292M.
The GS9068A may drive data rates up to 540Mb/s and
will achieve compliance to SMPTE 259M and SMPTE
344M.
The GS1528A/9068A accepts a LVPECL level
differential input that may be AC coupled. External
biasing resistors at the inputs are not required.
Power consumption is typically 168mW using a 3.3V
power supply.
The GS1528A/9068A is Pb-free, and the encapsulation
compound does not contain halogenated flame
retardant.
This component and all homogeneous subcomponents
are RoHS compliant.
GS1528A / GS9068A Data Sheet
30953 - 4
January 2006
2 of 16
GS1528A Functional Block Diagram
GS9068A Functional Block Diagram
SDO
R
SET
SDO
SDI
SDI
SD/HD
BANDGAP REFERENCE AND BIASING CIRCUIT
OUTPUT STAGE &
CONTROL
INPUT
DIFFERENTIAL
PAIR
SDO
R
SET
SDO
SDI
SDI
BANDGAP REFERENCE AND BIASING CIRCUIT
OUTPUT STAGE &
CONTROL
INPUT
DIFFERENTIAL
PAIR
GS1528A / GS9068A Data Sheet
30953 - 4
January 2006
3 of 16
Contents
Features ........................................................................................................................1
Applications...................................................................................................................1
Description ....................................................................................................................1
1. Pin Out ......................................................................................................................4
1.1 GS1528A Pin Assignment ..............................................................................4
1.2 GS9068A Pin Assignment ..............................................................................4
1.3 GS1528A / GS9068A Pin Descriptions ...........................................................4
2. Electrical Characteristics...........................................................................................5
2.1 Absolute Maximum Ratings ............................................................................5
2.2 DC Electrical Characteristics ..........................................................................5
2.3 AC Electrical Characteristics ...........................................................................6
3. Solder Reflow Profiles...............................................................................................7
4. Input / Output Circuits ...............................................................................................8
5. Detailed Description ..................................................................................................9
5.1 Input Interfacing ..............................................................................................9
5.2 Output Interfacing ...........................................................................................9
5.3 Output Return Loss Measurement ................................................................11
5.4 Output Amplitude Adjustment .......................................................................12
6. Application Information............................................................................................13
6.1 PCB Layout ...................................................................................................13
6.2 Typical Application Circuits ...........................................................................14
7. Package & Ordering Information.............................................................................15
7.1 Package Dimensions ....................................................................................15
7.2 Packaging Data .............................................................................................15
7.3 Ordering Information .....................................................................................15
8. Revision History ......................................................................................................16
GS1528A / GS9068A Data Sheet
30953 - 4
January 2006
4 of 16
1. Pin Out
1.1 GS1528A Pin Assignment
Figure 1-1: 8 Pin SOIC
1.2 GS9068A Pin Assignment
Figure 1-2: 8 Pin SOIC
1.3 GS1528A / GS9068A Pin Descriptions
SDI
SDI
V
EE
R
SET
SDO
SDO
SD/HD
V
CC
1
2
3
4
8
7
6
5
GS1528A
8 PIN SOIC
TOP VIEW
SDI
SDI
V
EE
R
SET
SDO
SDO
NC
V
CC
1
2
3
4
8
7
6
5
GS9068A
8 PIN SOIC
TOP VIEW
Pin Number
Name
Timing
Type
Description
1,2
SDI, SDI
Analog
Input
Serial digital differential input.
3
V
EE
Power
Most negative power supply connection. Connect to GND.
4
R
SET
Analog
Input
External output amplitude control resistor.
5
V
CC
Power
Most positive power supply connection. Connect to +3.3V.
6
SD/HD Non
Synchronous
Input
GS1528A:
Output slew rate control. When set HIGH, the output will
meet SMPTE 259M rise/fall time specifications. When set
LOW, the serial outputs will meet SMPTE 292M rise/fall
time specifications.
NC
GS9068A:
No connect. Not connected internally.
7, 8
SDO, SDO
Analog
Output
Serial digital differential output.
GS1528A / GS9068A Data Sheet
30953 - 4
January 2006
5 of 16
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
2.2 DC Electrical Characteristics
Parameter
Value
Supply Voltage
-0.5V to 3.6 V
DC
Input ESD Voltage
2kV
Storage Temperature Range
-50C < T
s
< 125C
Input Voltage Range (any input)
-0.3 to (V
CC
+0.3)V
Operating Temperature Range
0C to 70C
Solder Reflow Temperature
260C
Power Dissipation
300mW
V
DD
= 3.3V, T
A
= 0C to 70C, unless otherwise shown
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Notes
Test
Levels
Supply Voltage
V
CC
3.135
3.3
3.465
V
5%
3
Power Consumption
P
D
T
A
= 25C
168
mW
5
Supply Current
I
s
T
A
= 25C
51
64
mA
1
Output Voltage
V
CMOUT
Common mode
V
CC
- V
OUT
V
6
Input Voltage
V
CMIN
Common mode
1.6 +
V
SDI
/2
V
CC
-
V
SDI
/2
V
6
SD/HD Input
V
IH
2.4
V
1
7
V
IL
0.8
V
1
7
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.
9. Indirect test.
NOTES:
1. This parameter applies only to the GS1528A.
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