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PDF GS9074A Data sheet ( Hoja de datos )
| Número de pieza | GS9074A | |
| Descripción | Adaptive Cable Equalizer | |
| Fabricantes | Gennum | |
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GS9074A HD-LINX® II Adaptive Cable Equalizer
Features
• SMPTE 259M compliant
• Automatic cable equalization
• Multi-standard operation from 143Mb/s to 360Mb/s
• Supports DVB-ASI at 270Mb/s
• Small footprint (4mm x 4mm)
• Pb-free and RoHS compliant
• Manual bypass (useful for low data rates with slow
rise/fall times)
• Performance optimized for 270Mb/s
• Typical maximum equalized length of Belden 1694A
cable: 350m at 270Mb/s
• 50Ωdifferential output (with internal 50Ωpull-ups)
• Manual output mute or programmable mute based on
max cable length adjust
• Single 3.3V power supply operation
• Operating temperature range: 0°C to +70°C
Applications
• SMPTE 259M Coaxial Cable Serial Digital Interfaces
Description
The GS9074A is a second-generation high speed BiCMOS
integrated circuit designed to equalize and restore signals
received over 75Ωco-axial cable.
The GS9074A is designed to support SMPTE 259M, and is
optimized for performance at 270Mb/s.
The GS9074A features DC restoration to compensate for
the DC content of SMPTE pathological test patterns.
A voltage programmable mute threshold (MCLADJ) is
included to allow muting of the GS9074A output when an
approximate selected cable length is reached for SMPTE
259M signals. This feature allows the GS9074A to
distinguish between low amplitude SD-SDI signals and
noise at the input of the device. The serial digital outputs of
the GS9074A may be forced to a mute state by applying a
voltage to the MUTE pin.
Power consumption is typically 215mW using a 3.3V
power supply. The GS9074A is lead-free, and the
encapsulation compound does not contain halogenated
flame retardant (RoHS compliant).
MCLADJ
SDI
SDI
CABLE LENGTH ADJUSTOR
CARRIER DETECT
MUTE
EQUALIZER
DC RESTORE
OUTPUT
CD
MUTE
BYPASS
SDO
SDO
AGC
Figure A: GS9074A Functional Block Diagram
GS9074A HD-LINX® II Adaptive Cable Equalizer
Data Sheet
34166 - 4
November 2009
www.gennum.com
1 of 17
Proprietary & Confidential
1 page  
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
Table 2-1 lists the absolute maximum ratings for the GS9074A. 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
Reflow Temperature
Supply Voltage
Value
-0.5V to +3.6 VDC
2kV
-50°C < Ts < 125°C
-0.3 to (VCC +0.3)V
0°C to 70°C
260°C
-0.5V to +3.6 VDC
2.2 DC Electrical Characteristics
Table 2-2 shows the DC electrical characteristics of the GS9074A where conditions are
VDD = 3.3V, TA = 0°C to 70°C, unless otherwise shown.
Table 2-2: DC Electrical Characteristics
Parameter
Supply Voltage
Power Consumption
Supply Current
Output Common Mode
Voltage
Input Common Mode
Voltage
MCLADJ DC Voltage (to
mute signal)
MCLADJ Range
Symbol
VCC
PD
Is
VCMOUT
VCMIN
–
–
Conditions
–
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
0m, TA = 25°C
TA = 25°C
Min
3.135
–
–
–
–
–
–
Typ
3.3
215
65
VCC -
ΔVSDO/2
1.75
1.3
0.4
Max
3.465
–
–
–
–
–
–
Units
V
mW
mA
V
V
V
V
Notes
±5%
–
–
–
–
–
–
GS9074A HD-LINX® II Adaptive Cable Equalizer
Data Sheet
34166 - 4
November 2009
5 of 17
Proprietary & Confidential
5 Page 
MUTE,
BYPASS
Figure 5-4: MUTE and BYPASS Circuits
CD
CD
Figure 5-5: CD Circuit
GS9074A HD-LINX® II Adaptive Cable Equalizer
Data Sheet
34166 - 4
November 2009
11 of 17
Proprietary & Confidential
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet GS9074A.PDF ] | |
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