The EL1882C video sync separator ismanufactured using Elantec's highperformance analog CMOS process.This device extracts sync timing information from bothstandard and non-standard video input. It providescomposite sync, vertical sync, burst/back porch timing andodd/even field detection. 50% sync tip slicing providesprecise sync edge detection when the video input level isbetween 0.5VP-P and 2VP-P (sync tip amplitude 143mV to572mV). A single external resistor sets all internal timing toadjust for various video standards. The composite syncoutput follows video in sync pulses, and a vertical syncpulse is output on the rising edge of the first vertical serrationfollowing the vertical pre-equalizing string. For non-standardvertical inputs, a default vertical pulse is output when thevertical signal stays low for longer than the vertical syncdefault delay time. The odd/even output indicates fieldpolarity detected during the vertical blanking interval. TheEL1882C is plug-in compatible with the industry standardLM1881 and can be substituted for that part in 5Vapplications with improved 50% slicing and lower requiredsupply current.
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