GS9068A Datasheet PDF - Gennum Corporation

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GS9068A
Gennum Corporation

Part Number GS9068A
Description HD-LINX-R II Multi-Rate Dual Slew-Rate Cable Driver
Page 16 Pages


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GS1528A / GS9068A HD-LINX® II
Multi-Rate Dual Slew-Rate Cable Driver
GS1528A / GS9068A Data Sheet
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
GS9068A
• SMPTE 259M and SMPTE 344M compliant
• Dual coaxial cable driving outputs
• 50Ω 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: 0°C to 70°C
Description
The GS1528A/9068A is a second generation
high-speed BiCMOS integrated circuit designed to drive
one or two 75Ω 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.
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.
30953 - 4 January 2006
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GS1528A / GS9068A Data Sheet
BANDGAP REFERENCE AND BIASING CIRCUIT
RSET
SDI INPUT
DIFFERENTIAL
PAIR
SDI
OUTPUT STAGE &
CONTROL
SDO
SDO
SD/HD
GS1528A Functional Block Diagram
BANDGAP REFERENCE AND BIASING CIRCUIT
RSET
SDI INPUT
DIFFERENTIAL
PAIR
SDI
OUTPUT STAGE &
CONTROL
GS9068A Functional Block Diagram
SDO
SDO
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Contents
GS1528A / GS9068A Data Sheet
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
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1. Pin Out
1.1 GS1528A Pin Assignment
GS1528A / GS9068A Data Sheet
SDI
SDI
VEE
RSET
1
2
GS1528A
8 PIN SOIC
3 TOP VIEW
4
8
7
6
5
SDO
SDO
SD/HD
VCC
Figure 1-1: 8 Pin SOIC
1.2 GS9068A Pin Assignment
SDI
SDI
VEE
RSET
1
2
GS9068A
8 PIN SOIC
3 TOP VIEW
4
8
7
6
5
SDO
SDO
NC
VCC
Figure 1-2: 8 Pin SOIC
1.3 GS1528A / GS9068A Pin Descriptions
Pin Number
1,2
3
4
5
6
Name
SDI, SDI
VEE
RSET
VCC
SD/HD
Timing
Analog
Analog
Non
Synchronous
Type
Input
Power
Input
Power
Input
NC –
7, 8
SDO, SDO
Analog
Output
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.
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GS9068A HD-LINX-R II Multi-Rate Dual Slew-Rate Cable Driver GS9068A
Gennum Corporation
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