1

®

FN7173.1

EL4583

Sync Separator, 50% Slice, S-H, Filter,

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

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

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

1

2

3

4

16

15

14

13

5

6

7

12

11

10

8

9

FILTER CUT OFF

SET DETECT LEVEL

COMPOSITE SYNC OUT

FILTER INPUT

VERTICAL SYNC OUT

DIGITAL GND

FILTER OUTPUT

COMPOSITE VIDEO INPUT

ANALOG GND

HORIZONTAL SYNC OUT

VDD

ODD/EVEN OUTPUT

RSET*

BURST/BACK PORCH OUTPUT

NO SIGNAL DETECT OUTPUT

LEVEL OUTPUT

EL4583

(16-PIN SO, PDIP)

TOP VIEW

Ordering Information

PART NUMBER

PACKAGE

TAPE &

REEL

PKG.

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

(Note)

16-Pin SO (0.150”) (Pb-free)

7”

MDP0027

EL4583CSZ-T13

(Note)

16-Pin SO (0.150”) (Pb-free)

13”

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.

Data Sheet

June 27, 2005

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 1-888-468-3774

Copyright Intersil Americas Inc. 2002, 2003, 2005. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.