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.

特性 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)

Applications

? Video amplifiers

? PCMCIA applications

? A/D drivers

? Line drivers

? Portable computers

? High speed communications

? RGB applications

? Broadcast equipment

? Active filtering