GS1528A/GS9068A HD-LINX® II Multi-Rate Dual Slew-Rate Cable Driver
Features
GS1528A
•
•
•
•
•
•
•
•
SMPTE 292M, SMPTE 344M and SMPTE 259M
compliant
Dual coaxial cable driving outputs with selectable
slew rate
50Ω 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: 0°C to 70°C
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
75W coaxial 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 sub components are RoHS compliant.
GS9068A
•
•
•
•
•
•
•
•
SMPTE 259M and SMPTE 344M compliant
Dual coaxial cable driving outputs
50W differential PECL input
Pb-free and RoHS compliant
Pin compatible with GS1528A HD-LINX II multi-rate
SDI dual slew-rate cable driver
Seamless interface to other HD-LINX II family products
Single 3.3V power supply operation
Operating temperature range: 0°C to 70°C
Bandgap Reference & Biasing Circuit
R
SET
Bandgap Reference & Biasing Circuit
R
SET
SDI
SDI
Input
Differential
Pair
Output Stage &
Control
SDO
SDO
SDI
SDI
Input
Differential
Pair
Output Stage &
Control
SDO
SDO
GS1528A
SD/HD
GS9068A
Figure A: GS1528A (left) and GS9068A (right) Functional Block Diagrams
GS1528A/GS9068A HD-LINX® II Multi-Rate Dual
Slew-Rate Cable Driver
Data Sheet
30953 - 6
August 2010
www.gennum.com
1 of 18
Proprietary & Confidential
Revision History
Version
6
5
4
3
2
ECR
154747
153754
139112
137886
137403
PCN
–
–
38124
–
–
Date
August 2010
November 2009
January 2006
September
2005
July 2005
Changes and/or Modifications
Correction
to
Package Dimensions
and
Ordering Information.
Updated to latest
Gennum
template.
Corrected
Input Differential
Swing
to
2200mV.
Corrected
process to BiCMOS.
Updated to
current document
template to remove “Proprietary and
Confidential”
footer. Re-ordered
solder reflow profiles to show
preference for Pb-free profile.
Clarified
naming of standard Pb solder
reflow profile. Added packaging
data
section. Updated
document
to reflect
the RoHS
compliance
of both the
GS1528A
and
GS9068A.
Modified
Table 2-3.
Added reflow
profiles. Upgraded from a preliminary
data
sheet to a
data
sheet.
New
document.
1
133654
–
June 2004
0
132954
–
February 2004
GS1528A/GS9068A HD-LINX® II Multi-Rate Dual
Slew-Rate Cable Driver
Data Sheet
30953 - 6
August 2010
2 of 18
Proprietary & Confidential
Contents
Features.................................................................................................................................................................1
Applications.........................................................................................................................................................1
Description...........................................................................................................................................................1
Revision History .................................................................................................................................................2
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 Profile....................................................................................................................................8
4. Input / Output Circuits ................................................................................................................................9
5. Detailed Description.................................................................................................................................. 10
5.1 Input Interfacing ............................................................................................................................ 10
5.2 Output Interfacing ........................................................................................................................ 10
5.3 Output Return Loss Measurement ........................................................................................... 12
5.4 Output Amplitude Adjustment ................................................................................................. 12
6. Application Information .......................................................................................................................... 14
6.1 PCB Layout ....................................................................................................................................... 14
6.2 Typical Application Circuits ...................................................................................................... 14
7. Package & Ordering Information .......................................................................................................... 16
7.1 Package Dimensions ..................................................................................................................... 16
7.2 Packaging Data ............................................................................................................................... 16
7.3 Ordering Information ................................................................................................................... 17
GS1528A/GS9068A HD-LINX® II Multi-Rate Dual
Slew-Rate Cable Driver
Data Sheet
30953 - 6
August 2010
3 of 18
Proprietary & Confidential
1. Pin Out
1.1 GS1528A Pin Assignment
SDI
SDI
V
EE
R
SET
1
2
3
4
GS1528A
8-pin SOIC
(top view)
8
7
6
5
SDO
SDO
SD/HD
V
CC
Figure 1-1: 8 Pin
SOIC
1.2 GS9068A Pin Assignment
SDI
SDI
V
CC
R
SET
1
2
3
4
GS9068A
8-pin SOIC
(top view)
8
7
6
5
SDO
SDO
NC
V
CC
Figure 1-2: 8 Pin
SOIC
1.3 GS1528A/GS9068A Pin Descriptions
Table 1-1: Pin Descriptions
Pin Number
1,2
3
4
5
6
Name
SDI, SDI
V
EE
R
SET
V
CC
SD/HD
Timing
Analog
–
Analog
–
Non
Synchronous
Type
Input
Power
Input
Power
Input
Description
Serial digital differential
input.
Most negative power supply
connection. Connect
to
GND.
External output amplitude
control
resistor.
Most positive power supply
connection. Connect
to +3.3V.
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.
GS9068A:
No
connect.
Not
connected
internally.
Serial digital differential
output.
NC
7, 8
SDO, SDO
–
Analog
–
Output
GS1528A/GS9068A HD-LINX® II Multi-Rate Dual
Slew-Rate Cable Driver
Data Sheet
30953 - 6
August 2010
4 of 18
Proprietary & Confidential
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
Table 2-1
lists the absolute maximum ratings for the GS1528A/GS9068A. Conditions
exceeding the limits listed may cause permanent damage to the device. This is a stress
rating only and functional operation of the device at these or any other conditions above
those listed in the operational sections of this specification is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
Table 2-1: Absolute Maximum Ratings
Parameter
Supply
Voltage
Input ESD Voltage
Storage
Temperature Range
Input Voltage Range (any input)
Operating Temperature Range
Solder
Reflow Temperature
Power Dissipation
Value
-0.5V to 3.6 V
DC
2kV
-50°C < T
s
< 125°C
-0.3 to (V
CC
+0.3)V
0°C to 70°C
260°C
300mW
2.2 DC Electrical Characteristics
Table 2-2
shows the DC electrical characteristics of the GS1528A and the GS9068A
where conditions are V
DD
= 3.3V, T
A
= 0°C to 70°C, unless otherwise specified.
Table 2-2: DC Electrical Characteristics
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Notes
Test
Levels
3
5
1
6
6
Supply
Voltage
Power
Consumption
Supply Current
Output Voltage
Input Voltage
V
CC
P
D
I
s
V
CMOUT
V
CMIN
–
T
A
= 25°C
T
A
= 25°C
Common
mode
Common
mode
3.135
–
–
–
1.6 +
ΔV
SDI
/2
3.3
168
51
V
CC
- V
OUT
–
3.465
–
64
–
V
CC
-
ΔV
SDI
/2
V
mW
mA
V
V
±5%
–
–
–
–
GS1528A/GS9068A HD-LINX® II Multi-Rate Dual
Slew-Rate Cable Driver
Data Sheet
30953 - 6
August 2010
5 of 18
Proprietary & Confidential
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