The EL1882C video sync separator is manufactured using Elantecs 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 supply current.

Features

• NTSC, PAL, SECAM, non-standard video sync separation

• Precision 50% slicing of video input levels from 0.5VP-P to 2VP-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