EL1883

Sync Separator with Horizontal Output

Product Status: Mass Production

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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