EL1882CN INTERSIL [Intersil Corporation], EL1882CN Datasheet

EL1882CN

Manufacturer Part Number

EL1882CN

Description

Sync Separator w/50% Slice, AGC

Manufacturer

INTERSIL [Intersil Corporation]

Datasheet

1.EL1882CN.pdf (11 pages)

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Sync Separator w/50% Slice, AGC

This device extracts sync timing information from both

standard and non-standard video input. It provides

composite sync, vertical sync, burst/back porch timing and

odd/even field detection. 50% sync tip slicing provides

precise sync edge detection when the video input level is

between 0.5V

572mV). A single external resistor sets all internal timing to

adjust for various video standards. The composite sync

output follows video in sync pulses, and a vertical sync

pulse is output on the rising edge of the first vertical serration

following the vertical pre-equalizing string. For non-standard

vertical inputs, a default vertical pulse is output when the

vertical signal stays low for longer than the vertical sync

default delay time. The odd/even output indicates field

polarity detected during the vertical blanking interval. The

EL1882C is plug-in compatible with the industry standard

LM1881 and can be substituted for that part in 5V

applications with improved 50% slicing and lower required

supply current.

Ordering Information

EL1882CN

EL1882CS

PART NO.

P-P

and 2V

TEMP. RANGE

-40°C to +85°C

The EL1882C video sync separator is

manufactured using Elantec's high

performance analog CMOS process.

P-P

(sync tip amplitude 143mV to

Data Sheet

PACKAGE

8-lead SO

8-pin DIP

PKG. NO.

MDP0031

MDP0027

1-888-INTERSIL or 321-724-7143

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

Features

• NTSC, PAL, SECAM, non-standard video sync separation

• Precision 50% slicing of video input levels from 0.5V

• Low supply current - 1.5mA typ.

• Single +5V supply

• Composite, vertical sync output

• Odd/Even field output

• Burst/Back porch output

• Plug-in compatible with industry standard LM1881 in 5V

• Available in 8-pin DIP and SO package

Applications

• Video special effects

• Video test equipment

• Video distribution

• Displays

• Imaging

• Video data capture

• Video triggers

Demo Board

A dedicated demo board is not available. However, this

device can be placed on the EL4584/5 demo board.

Pinout

COMPOSITE SYNC OUT

COMPOSITE VIDEO IN

VERTICAL SYNC OUT

applications

P-P

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

January 1996, Rev A

Intersil (and design) is a registered trademark of Intersil Americas Inc.

GND

(8-PIN PDIP, SO)

TOP VIEW

EL1882C

BURST/BACK

PORCH OUTPUT

ODD/EVEN OUTPUT

SET

EL1882C

FN7019

P-P

Related parts for EL1882CN

EL1882CN Summary of contents

Page 1

... EL1882C is plug-in compatible with the industry standard LM1881 and can be substituted for that part in 5V applications with improved 50% slicing and lower required supply current. Ordering Information PART NO. TEMP. RANGE PACKAGE EL1882CN -40°C to +85°C 8-pin DIP EL1882CS -40°C to +85°C 8-lead SO 1 January 1996, Rev A Features • ...

Page 2

Absolute Maximum Ratings ( Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

Pin Descriptions PIN NUMBER PIN NAME 1 Composite Sync Out 2 Composite Video In 3 Vertical Sync Out 4 GND 5 Burst/Back Porch Output Burst/back porch output; low during burst portion of composite video (Note 1) SET 7 ...

Page 4

Typical Performance Curves Supply Current, Quiescent R = 681k SET V Voltage CLAMP R = 681k SET V RSET R = 681k SET 4 EL1882C 681k SET Clamp Discharge Current R = 681k ...

Page 5

Typical Performance Curves Burst/Back Porch Width 5V 25°C DD Vertical Sync Width 5V 25° EL1882C (Continued Horizontal Frequency SET SET SET Burst/Back Porch Delay ...

Page 6

Typical Performance Curves Composite Sync Prop Delay R = 681k SET DD Vertical Sync Pulse Width R = 681k SET 6 EL1882C (Continued) Burst/Back Porch Width 681k SET Vertical Sync Default Delay Time ...

Page 7

Timing Diagrams NOTES: b. The composite sync output reproduces all the video input sync pulses, with a propagation delay. c. Vertical sync leading edge is coincident with the first vertical serration pulse leading edge, with a propagation delay. d. Odd-even ...

Page 8

Expanded Timing Diagrams 8 EL1882C FIGURE 2. STANDARD VERTICAL TIMING FIGURE 3. NON-STANDARD VERTICAL TIMING ...

Page 9

Applications Information Video In A simplified block diagram is shown in Figure coupled video signal is input to Video In pin 2 via C nominally 0.1µF. Clamp charge current will prevent the signal on pin 2 from ...

Page 10

R Odd/Even Because a typical television picture is composed of two interlaced fields, there is an odd field that includes all the odd lines, ...

Page 11

Simplified Block Diagram All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes ...

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