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PDF EL4501C Data sheet ( Hoja de datos )
| Número de pieza | EL4501C | |
| Descripción | Video Front End | |
| Fabricantes | Elantec Semiconductor | |
| Logotipo |  |
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EL4501C - Preliminary
Video Front End
Features
• DC restore and sync separator
• Wideband (100MHz) DC restore
• Advanced sync separator
• Programmable data slicer
• Single 5 volt operation
• Differential Gain = 0.1%
• Differential Phase = 0.1°
• Low power (<75mW)
Applications
• Video Capture & Editing
• Video Projectors
• Set Top Boxes
• Security Video
• Embedded data recovery
Ordering Information
Part No.
EL4501CS
EL4501CU
Temp. Range
-40°C to +85°C
-40°C to +85°C
Package
24-Pin SOIC
24-Pin QSOP
Outline #
MDP0027
MDP0031
General Description
The EL4501C Video Front End (VFE) is an integrated solution that
provides the key analog signal conditioning functions for analog video
signals. It forms the front end interface for either an analog or ana-
log/digital video system. The VFE contains a high bandwidth DC
Restore, a sophisticated Sync Separator, and a Data Slicer for embed-
ded data recovery.
The VFE will perform the restoration of the DC reference level
(blanking level) and the extraction of all of the necessary timing sig-
nals needed for synchronization and control. The sync separator is
designed for very good noise immunity by incorporating a signal qual-
ification scheme and internal brick wall filter. A data slicer is also
included to help decode data embedded in the active video or VBI
areas of the signal.
The VFE operates from a single 5 volt supply and is available in a
small 24 pin QSOP package that takes only 0.08in2(54mm2) of board
area, as well as a standard 24 pin SOIC.
Connection Diagram
VFB 1
VIDEO_IN 2
DS_MODE 3
DS_ENAB 4
GND 5
GNDD 6
RFREQ 7
FSEL 8
SYNC_IN 9
LOS 10
COMPOSITE 11
HORIZONTAL 12
24 VIDEO_OUT
23 DS_OUT
22 DS_REF
21 REF_IN
20 REF_OUT
19 VS
18 VSD
17 SYNC_AMP
16 NC
15 BACK_PORCH
14 ODD/EVEN
13 VERTICAL
© 2000 Elantec Semiconductor, Inc.
1 page  
Timing Diagrams
Fields One and Three (ODD)
Composite Signal
Composite Sync Output
Burst/Back Porch Output
Horizontal Sync Output
Vertical Sync Output
Odd/Even Output
Fields Two and Four (EVEN)
Composite Signal
Composite Sync Output
Burst/Back Porch Output
Horizontal Sync Output
Vertical Sync Output
Odd/Even Output
EL4501C - Preliminary
Video Front End
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet EL4501C.PDF ] | |
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