January 1996, Rev A
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
-40°C to +85°C
-40°C to +85°C
• NTSC, PAL, SECAM, non-standard video sync separation
• Precision 50% slicing of video input levels from 0.5VP-P to
• 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
• Video special effects
• Video test equipment
• Video distribution
• Video data capture
• Video triggers
A dedicated demo board is not available. However, this
device can be placed on the EL4584/5 demo board.
(8-PIN PDIP, SO)
COMPOSITE SYNC OUT 1
COMPOSITE VIDEO IN 2
VERTICAL SYNC OUT 3
8 VDD 5V
7 ODD/EVEN OUTPUT
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved. Elantec is a registered trademark of Elantec Semiconductor, Inc.
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