EL4583A Datasheet, PDF (1/10 Pages) Intersil Corporation – Sync Separator, 50% Slice, S-H, Filter, HOUT

®
Data Sheet
August 1, 2005
EL4583A
FN7503.1
Sync Separator, 50% Slice, S-H, Filter,
H_OUT
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.
Outputs are: composite sync, vertical sync, filter, burst/back
porch, horizontal, no signal detect, level, and odd/even
output (in interlaced scan formats only).
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
and compensates for input levels of 0.5V to 2.0V_P-P.
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.
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.
Pinout
EL4583A
(16-PIN SO)
TOP VIEW
FILTER CUTOFF 1
SET DETECT LEVEL 2
COMPOSITE
SYNC OUT
3
FILTER INPUT 4
VERTICAL
SYNC OUT
5
DITIGAL GND 6
FILTER OUTPUT 7
COMPOSITE
VIDEO INPUT
8
16 ANALOG GND
15
HORIZONTAL
SYNC OUT
14 VDD
13
ODD/EVEN
OUTPUT
12 RSET*
11
BURST/BACK
PORCH OUTPUT
10
NO SIGNAL
DETECT OUTPUT
9 LEVEL OUTPUT
* R_SET MUST BE A 1% REGISTER
Features
• NTSC, PAL, and SECAM sync separation
• Single supply, +5V operation
• Precision 50% slicing
• Built-in programmable color burst filter
• Decodes non-standard vertical
• Horizontal sync output
• Sync pulse amplitude output
• Low-power CMOS
• Detects loss of signal
• Resistor programmable scan rate
• Few external components
• Available in 16-pin SO (0.150”) packages
• Pb-Free plus anneal available (RoHS compliant)
Applications
• Video special effects
• Video test equipment
• Video distribution
• Multimedia
• Displays
• Imaging
• Video data capture
• Video triggers
Ordering Information
PART NUMBER
PACKAGE
EL4583AIS
16-Pin SO (0.150”)
EL4583AIS-T7 16-Pin SO (0.150”)
TAPE &
REEL PKG. DWG. #
-
MDP0027
7”
MDP0027
EL4583AIS-T13 16-Pin SO (0.150”) 13”
MDP0027
EL4583AISZ
16-Pin SO (0.150”)
-
(See Note)
(Pb-free)
MDP0027
EL4583AISZ-T7 16-Pin SO (0.150”)
7”
(See Note)
(Pb-free)
MDP0027
EL4583AISZ-T13 16-Pin SO (0.150”) 13”
(See Note)
(Pb-free)
MDP0027
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.
1
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.
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.