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PDF GV8601 Data sheet ( Hoja de datos )
| Número de pieza | GV8601 | |
| Descripción | Adaptive Cable Equalizer | |
| Fabricantes | Semtech | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de GV8601 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
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GV8601
GV8601 Adaptive Cable Equalizer
Key Features
• HDcctv 1.0, HD-SDI (ST 292), 3G-SDI (ST 424) and
SD-SDI (ST 259) compliant
• Automatic cable equalization
• Multi-standard operation from 143Mb/s to 2.97Gb/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 1.485Gb/s
(HDcctv/HD-SDI) and 2.970Gb/s
• Differential outputs support DC coupling to 3.3V and
2.5V CML logic
• Typical equalized length of Belden 1694A cable: 140m
at 2.97Gb/s
• Typical equalized length of Belden 543945 HDcctv 1.1
reference cable: 150m at 1.485Gb/s
• Typical equalized length of Belden 543945 HDcctv 1.1
reference cable: 330m at 270Mb/s (HD-VLC™)
• 50Ω differential output (internal 50Ω pull-ups)
• Single 3.3V power supply operation
• Operating temperature range: -20°C to +85°C
Applications
• Digital video recorders (DVR)
• Video capture cards
• Video monitors and displays
• Video mixers and switchers
• Video servers
• Camcorders
• Distribution amplifiers
• Repeaters
Description
The GV8601 is a high-speed BiCMOS integrated circuit
designed to equalize and restore signals received over 75Ω
coaxial cable.
The GV8601 is designed to support HDcctv 1.0, ST 292 and
ST 424, and is optimized for performance at 1.485Gb/s and
2.97Gb/s serial data.
The GV8601 features DC restoration to compensate for the
DC content of HDcctv 1.1 pathological test patterns.
The differential outputs can be DC-coupled to
industry-standard 3.3V and 2.5V CML logic using the
CMSET pin.
Power consumption is typically 195mW using a 3.3V
power supply. The GV8601 is lead-free, and the
encapsulation compound does not contain halogenated
flame retardant.
This component and all homogenous subcomponents are
RoHs compliant.
Carrier Detect
Mute
SDI
SDI
Equalizer
DC
Restore
Output
AGC
CD
MUTE
BYPASS
SDO
SDO
GV8601 Adaptive Cable Equalizer
Final Data Sheet
Rev. 1
November 2012
AGC AGC
CMSET
GV8601 Functional Block Diagram
www.semtech.com
1 of 16
1 page  
2. Electrical Characteristics
2.1 Absolute Maximum Ratings
Parameter
Supply Voltage
Input ESD Voltage (HBM)
Storage Temperature Range
Input Voltage Range (any input)
Operating Temperature Range
Functional Temperature Range
Solder Reflow Temperature
Value
-0.5V to +3.6V DC
5kV
-50°C < Ts < 125°C
-0.3 to (VCC +0.3)V
-20°C to +85°C
-40°C to +85°C
260°C
2.2 DC Electrical Characteristics
Table 2-1: DC Electrical Characteristics
VCC = 3.3V ±5%, TA = -20°C to +85°C, unless otherwise shown
Parameter
Symbol Conditions
Supply Voltage
Power Consumption
Supply Current
Output Common Mode
Voltage
Input Common Mode Voltage
CD Output Voltage
Mute Input Voltage Required
to Force Outputs to Mute
Mute Input Voltage Required
to Force Outputs Active
VCC
PD
Is
VCMOUT
VCMIN
VCD(OH)
VCD(OL)
VMute
VMute
–
TA = 25°C
TA = 25°C
TA = 25°C
TA = 25°C
Carrier not
present
Carrier present
Min to Mute
Max to
Activate
Min
3.135
–
–
–
–
2.4
–
2.0
–
Typ
3.3
195
59
VCMSET - ΔVSDO/2
1.8
–
–
–
–
Max
3.465
250
–
–
–
–
0.4
–
0.8
Units
V
mW
mA
V
V
V
V
V
Notes
–
–
–
1
–
–
–
–
V–
GV8601 Adaptive Cable Equalizer
Final Data Sheet
Rev. 1
November 2012
5 of 16
5 Page 
5. Application Information
5.1 High Gain Adaptive Cable Equalizers
In order to continue to extend the cable length that an equalizer will remain operational
over, it is necessary to have high gain in the equalizer.
A video cable equalizer must provide wide band gain over a range of frequencies in
order to accommodate the range of data rates and signal patterns that are present in a
HDcctv and SMPTE compliant serial video streams.
The GV8601 has an increase in gain over the GV8501 at critical 1.5Gb/s and 3Gb/s
frequencies. Small levels of signal or noise present at the input pins of the Equalizer may
cause chatter at the output. In order to prevent this from happening, particular attention
must be paid to board layout.
5.2 PCB Layout
Special attention must be paid to component layout when designing High-Speed Serial
Digital Interfaces. An FR-4 dielectric can be used, however, controlled impedance
transmission lines are required for PCB traces longer than approximately 1cm. Note the
following PCB artwork features used to optimize performance:
• PCB trace width for 3Gb/s rate signals is closely matched to SMT component width
to minimize reflections due to change in trace impedance.
• The PCB ground plane is removed under the GV8601 input components to
minimize parasitic capacitance.
• The PCB ground plane is removed under the GV8601 output components to
minimize parasitic capacitance.
• High speed traces are curved to minimize impedance changes.
GV8601 Adaptive Cable Equalizer
Final Data Sheet
Rev. 1
November 2012
11 of 16
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet GV8601.PDF ] | |
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