EL1882C Datasheet, PDF (1/11 Pages) Intersil Corporation – Sync Separator w/50% Slice, AGC

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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 0.5V_P-P and 2V_P-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 0.5V_P-P to
2V_P-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 R_SET
5 BURST/BACK
PORCH OUTPUT
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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