EL4583 Datasheet, PDF (1/9 Pages) Intersil Corporation – Sync Separator, 50% Slice, S-H, Filter, Horizontal sync output

®
Data Sheet
June 27, 2005
EL4583
FN7173.1
Sync Separator, 50% Slice, S-H, Filter,
H_OUT
The EL4583 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 EL4583 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.
The EL4583 is manufactured using Elantec’s high
performance analog CMOS process.
Pinout
EL4583
(16-PIN SO, PDIP)
TOP VIEW
FILTER CUT OFF 1
SET DETECT LEVEL 2
COMPOSITE SYNC OUT 3
FILTER INPUT 4
VERTICAL SYNC OUT 5
DIGITAL 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
*Note: 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
• Same socket can be used for 8-pin EL4581
• Low-power CMOS
• Detects loss of signal
• Resistor programmable scan rate
• Few external components
• Available in 16-pin PDIP and 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
TAPE & PKG.
REEL DWG. #
EL4583CN
16-Pin PDIP
- MDP0031
EL4583CS
16-Pin SO (0.150”)
- MDP0027
EL4583CS-T7 16-Pin SO (0.150”)
7” MDP0027
EL4583CS-T13 16-Pin SO (0.150”)
13” MDP0027
EL4583CSZ (Note) 16-Pin SO (0.150”) (Pb-free) - MDP0027
EL4583CSZ-T7 16-Pin SO (0.150”) (Pb-free) 7” MDP0027
(Note)
EL4583CSZ-T13 16-Pin SO (0.150”) (Pb-free) 13” MDP0027
(Note)
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.
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