Overview: ®
Data Sheet EL1882C January 1996, Rev A FN7019 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 supply current. Ordering Information PART NO. TEMP. RANGE EL1882CN -40°C to +85°C EL1882CS -40°C to +85°C PACKAGE 8-pin DIP 8-lead SO PKG. NO.
