EL4583A
®
Data Sheet
August 1, 2005
FN7503.1
Sync Separator, 50% Slice, S-H, Filter,
Features
H
OUT
• NTSC, PAL, and SECAM sync separation
• Single supply, +5V operation
• Precision 50% slicing
The EL4583A extracts timing from video sync in NTSC, PAL,
and SECAM systems, and non-standard formats, or from
computer graphics operating at higher scan rates. Timing
adjustment is via an external resistor. Input without valid
vertical interval (no serration pulses) produces a default
vertical output.
• Built-in programmable color burst filter
• Decodes non-standard vertical
• Horizontal sync output
Outputs are: composite sync, vertical sync, filter, burst/back
porch, horizontal, no signal detect, level, and odd/even
output (in interlaced scan formats only).
• Sync pulse amplitude output
• Low-power CMOS
The EL4583A sync slice level is set to the mid-point between
sync tip and the blanking level. This 50% point is determined
by two internal sample and hold circuits that track sync tip
and back porch levels. It provides hum and noise rejection
• Detects loss of signal
• Resistor programmable scan rate
• Few external components
and compensates for input levels of 0.5V to 2.0V
.
P-P
• Available in 16-pin SO (0.150”) packages
• Pb-Free plus anneal available (RoHS compliant)
A built in filter attenuates the chroma signal to prevent color
burst from disturbing the 50% sync slice. Cut off frequency is
set by a resistor to ground from the Filter Cut Off pin.
Additionally, the filter can be by-passed and video signal fed
directly to the Video Input.
Applications
• Video special effects
• Video test equipment
• Video distribution
• Multimedia
The level output pin provides a signal with twice the sync
amplitude which may be used to control an external AGC
function. A TTL/CMOS compatible No Signal Detect Output
flags a loss or reduction in input signal level. A resistor sets
the Set Detect Level.
• Displays
• Imaging
Pinout
• Video data capture
• Video triggers
EL4583A
(16-PIN SO)
TOP VIEW
Ordering Information
FILTER CUTOFF
1
2
3
4
5
6
7
8
16 ANALOG GND
TAPE &
HORIZONTAL
15
PART NUMBER
EL4583AIS
PACKAGE
REEL
PKG. DWG. #
MDP0027
MDP0027
MDP0027
MDP0027
SET DETECT LEVEL
SYNC OUT
COMPOSITE
SYNC OUT
16-Pin SO (0.150”)
16-Pin SO (0.150”)
16-Pin SO (0.150”)
-
7”
13”
-
14 VDD
EL4583AIS-T7
EL4583AIS-T13
ODD/EVEN
13
FILTER INPUT
OUTPUT
VERTICAL
SYNC OUT
12 RSET*
EL4583AISZ
(See Note)
16-Pin SO (0.150”)
(Pb-free)
BURST/BACK
11
DITIGAL GND
PORCH OUTPUT
EL4583AISZ-T7
(See Note)
16-Pin SO (0.150”)
(Pb-free)
7”
MDP0027
MDP0027
NO SIGNAL
FILTER OUTPUT
10
DETECT OUTPUT
COMPOSITE
VIDEO INPUT
9
LEVEL OUTPUT
EL4583AISZ-T13 16-Pin SO (0.150”)
(See Note) (Pb-free)
13”
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material
sets; molding compounds/die attach materials and 100% matte tin plate
termination finish, which are RoHS compliant and compatible with both SnPb
and Pb-free soldering operations. Intersil Pb-free products are MSL classified
at Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
* R
MUST BE A 1% REGISTER
SET
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
1
Copyright © Intersil Americas Inc. 2004, 2005. All Rights Reserved. All other trademarks mentioned are the property of their respective owners.
Manufactured under U.S. Patent 5,528,303. Manufactured under License, U.S. Patents 5,486,869; 5,754,250.