EL1883

Sync Separator with Horizontal Output

OVERVIEW

The EL1883 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 and also in the presence of Macrovision pulses. It provides composite sync, vertical sync, burst/back porch timing, and horizontal outputs. Fixed 70mV sync tip slicing provides 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 horizontal output gives horizontal timing with pre/post equalizing pulses.

The EL1883 is available in an 8-pin SO package and is specified for operation over the full -40°C to +85°C temperature range.

KEY FEATURES

  • NTSC, PAL, SECAM, non-standard video sync separation
  • Fixed 70mV slicing of video input levels from 0.5VP-P to 2VP-P
  • Low supply current - 1.5mA typ.
  • Single 3V to 5V supply
  • Composite sync output
  • Vertical output
  • Horizontal output
  • Burst/back porch output
  • Macrovision compatible
  • Available in 8-pin SO package
  • Pb-Free plus anneal available (RoHS compliant)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
EL1883
Basic Information
Production Status
Mass Production
Slicing Fixed (70mV)
Yes
Slicing Input Adaptive
No
Color Burst Filter - External
Yes
Outputs Composite
Yes
Outputs Horizontal
Yes
Outputs Vertical
Yes
Outputs Burst
Yes
Outputs Odd/Even
No
Outputs Sync Amplitude
No
Composite Propagation Delay
30 ns
IS
1.2 mA
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +85

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