sync separator. EL1882C Datasheet

EL1882C separator. Datasheet pdf. Equivalent


Intersil EL1882C
®
Data Sheet
EL1882C
January 1996, Rev A
FN7019
Sync Separator w/50% Slice, AGC
The EL1882C video sync separator is
manufactured using Elantec's high
performance analog CMOS process.
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 0.5VP-P and 2VP-P (sync tip amplitude 143mV to
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
PART NO.
TEMP. RANGE
EL1882CN
-40°C to +85°C
EL1882CS
-40°C to +85°C
PACKAGE
8-pin DIP
8-lead SO
PKG. NO.
MDP0031
MDP0027
Features
• NTSC, PAL, SECAM, non-standard video sync separation
• Precision 50% slicing of video input levels from 0.5VP-P to
2VP-P
• 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
applications
• 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
EL1882C
(8-PIN PDIP, SO)
TOP VIEW
COMPOSITE SYNC OUT 1
COMPOSITE VIDEO IN 2
VERTICAL SYNC OUT 3
GND 4
8 VDD 5V
7 ODD/EVEN OUTPUT
6 RSET
5 BURST/BACK
PORCH OUTPUT
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. 2002. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
All other trademarks mentioned are the property of their respective owners.


EL1882C Datasheet
Recommendation EL1882C Datasheet
Part EL1882C
Description video sync separator
Feature EL1882C; ® Data Sheet EL1882C January 1996, Rev A FN7019 Sync Separator w/50% Slice, AGC The EL1882C vide.
Manufacture Intersil
Datasheet
Download EL1882C Datasheet




Intersil EL1882C
EL1882C
Absolute Maximum Ratings (TA = 25°C)
VCC Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7V
Storage Temperature. . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (5 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Pin Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to VCC +0.5V
Operating Ambient Temperature Range . . . . . . . . . .-40°C to +85°C
Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . 125°C
Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .400mW
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
MPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests
are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA
DC Electrical Specifications VDD = 5V, TA = 25°C, RSET = 680k, unless otherwise specified.
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNIT
IDD, Quiescent
Clamp Voltage
VDD = 5V
Pin 2, Unloaded
0.75
1.5
3.0
mA
1.35
1.5
1.65
V
Clamp Discharge Current
Pin 2 = 2V
3.2
12
16
µA
Clamp Charge Current
Pin 2 = 1V
-2.0
-1.5
-0.8
mA
RSET Pin Reference Voltage
VOL Output Low Voltage
VOH Output High Voltage
Pin 6
IOL = 1.6mA
IOH = -40µA
IOH = -1.6mA
1.20
1.31
1.40
V
0.4
0.8
V
4
4.8
V
2.4
3.5
Dynamic Specifications
PARAMETER
DESCRIPTION
MIN
TYP
MAX
UNIT
Comp Sync Prop Delay, tCS
See Figure 2
10
25
40
ns
Vertical Sync Width, tVS
Normal or Default Trigger, 50%-50%
190
270
350
µs
Vertical Sync Default Delay, tVSD See Figure 3
35
65
85
µs
Burst/Back Porch Delay, tBD
See Figure 2
250
450
650
ns
Burst/Back Porch Width, tB
See Figure 2
2.5
3.6
4.5
µs
Input Dynamic Range
Video Input Amplitude to Maintain 50% Slice Spec
0.5
2
VP-P
Slice Level
VSLICE/VCLAMP
40
50
60
%
2



Intersil EL1882C
EL1882C
Pin Descriptions
PIN NUMBER
PIN NAME
FUNCTION
1
Composite Sync Out
Composite sync pulse output; sync pulses start on a falling edge and end on a rising edge.
2
Composite Video In
AC coupled composite video input; sync tip must be at the lowest potential (positive picture phase).
3
Vertical Sync Out
Vertical sync pulse output; the falling edge of vert sync is the start of the vertical period.
4
GND
Supply ground.
5
Burst/Back Porch Output Burst/back porch output; low during burst portion of composite video.
6
RSET (Note 1)
An external resistor to ground sets all internal timing; a 681k 1% resistor will provide correct timing for
NTSC signals.
7
Odd/Even Output
Odd/even field output; high during odd fields, low during even fields; transitions occur at start of vert
sync pulse.
8
VDD 5V
NOTE:
1. RSET must be a 1% resistor.
Positive supply (5V).
3







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